217571640

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{409}}^1$

素因数の和:478

約数の個数: 256

約数和(自身を含む): 793497600

約数和(自身を除く): 575925960

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 13, 15, 20, 22, 24, 26, 30, 31, 33, 39, 40, 44, 52, 55, 60, 62, 65, 66, 78, 88, 93, 104, 110, 120, 124, 130, 132, 143, 155, 156, 165, 186, 195, 220, 248, 260, 264, 286, 310, 312, 330, 341, 372, 390, 403, 409, 429, 440, 465, 520, 572, 620, 660, 682, 715, 744, 780, 806, 818, 858, 930, 1023, 1144, 1209, 1227, 1240, 1320, 1364, 1430, 1560, 1612, 1636, 1705, 1716, 1860, 2015, 2045, 2046, 2145, 2418, 2454, 2728, 2860, 3224, 3272, 3410, 3432, 3720, 4030, 4090, 4092, 4290, 4433, 4499, 4836, 4908, 5115, 5317, 5720, 6045, 6135, 6820, 8060, 8180, 8184, 8580, 8866, 8998, 9672, 9816, 10230, 10634, 12090, 12270, 12679, 13299, 13497, 13640, 15951, 16120, 16360, 17160, 17732, 17996, 20460, 21268, 22165, 22495, 24180, 24540, 25358, 26585, 26598, 26994, 31902, 35464, 35992, 38037, 40920, 42536, 44330, 44990, 48360, 49080, 50716, 53170, 53196, 53988, 58487, 63395, 63804, 66495, 67485, 76074, 79755, 88660, 89980, 101432, 106340, 106392, 107976, 116974, 126790, 127608, 132990, 134970, 139469, 152148, 159510, 164827, 175461, 177320, 179960, 190185, 212680, 233948, 253580, 265980, 269940, 278938, 292435, 304296, 319020, 329654, 350922, 380370, 418407, 467896, 494481, 507160, 531960, 539880, 557876, 584870, 638040, 659308, 697345, 701844, 760740, 824135, 836814, 877305, 988962, 1115752, 1169740, 1318616, 1394690, 1403688, 1521480, 1648270, 1673628, 1754610, 1813097, 1977924, 2092035, 2339480, 2472405, 2789380, 3296540, 3347256, 3509220, 3626194, 3955848, 4184070, 4944810, 5439291, 5578760, 6593080, 7018440, 7252388, 8368140, 9065485, 9889620, 10878582, 14504776, 16736280, 18130970, 19779240, 21757164, 27196455, 36261940, 43514328, 54392910, 72523880, 108785820, 217571640]

約数ペア:

[(1, 217571640), (2, 108785820), (3, 72523880), (4, 54392910), (5, 43514328), (6, 36261940), (8, 27196455), (10, 21757164), (11, 19779240), (12, 18130970), (13, 16736280), (15, 14504776), (20, 10878582), (22, 9889620), (24, 9065485), (26, 8368140), (30, 7252388), (31, 7018440), (33, 6593080), (39, 5578760), (40, 5439291), (44, 4944810), (52, 4184070), (55, 3955848), (60, 3626194), (62, 3509220), (65, 3347256), (66, 3296540), (78, 2789380), (88, 2472405), (93, 2339480), (104, 2092035), (110, 1977924), (120, 1813097), (124, 1754610), (130, 1673628), (132, 1648270), (143, 1521480), (155, 1403688), (156, 1394690), (165, 1318616), (186, 1169740), (195, 1115752), (220, 988962), (248, 877305), (260, 836814), (264, 824135), (286, 760740), (310, 701844), (312, 697345), (330, 659308), (341, 638040), (372, 584870), (390, 557876), (403, 539880), (409, 531960), (429, 507160), (440, 494481), (465, 467896), (520, 418407), (572, 380370), (620, 350922), (660, 329654), (682, 319020), (715, 304296), (744, 292435), (780, 278938), (806, 269940), (818, 265980), (858, 253580), (930, 233948), (1023, 212680), (1144, 190185), (1209, 179960), (1227, 177320), (1240, 175461), (1320, 164827), (1364, 159510), (1430, 152148), (1560, 139469), (1612, 134970), (1636, 132990), (1705, 127608), (1716, 126790), (1860, 116974), (2015, 107976), (2045, 106392), (2046, 106340), (2145, 101432), (2418, 89980), (2454, 88660), (2728, 79755), (2860, 76074), (3224, 67485), (3272, 66495), (3410, 63804), (3432, 63395), (3720, 58487), (4030, 53988), (4090, 53196), (4092, 53170), (4290, 50716), (4433, 49080), (4499, 48360), (4836, 44990), (4908, 44330), (5115, 42536), (5317, 40920), (5720, 38037), (6045, 35992), (6135, 35464), (6820, 31902), (8060, 26994), (8180, 26598), (8184, 26585), (8580, 25358), (8866, 24540), (8998, 24180), (9672, 22495), (9816, 22165), (10230, 21268), (10634, 20460), (12090, 17996), (12270, 17732), (12679, 17160), (13299, 16360), (13497, 16120), (13640, 15951)]