81461280

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{149}}^1$

素因数の和:251

約数の個数: 192

約数和(自身を含む): 277603200

約数和(自身を除く): 196141920

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 17, 20, 24, 30, 32, 34, 40, 48, 51, 60, 67, 68, 80, 85, 96, 102, 120, 134, 136, 149, 160, 170, 201, 204, 240, 255, 268, 272, 298, 335, 340, 402, 408, 447, 480, 510, 536, 544, 596, 670, 680, 745, 804, 816, 894, 1005, 1020, 1072, 1139, 1192, 1340, 1360, 1490, 1608, 1632, 1788, 2010, 2040, 2144, 2235, 2278, 2384, 2533, 2680, 2720, 2980, 3216, 3417, 3576, 4020, 4080, 4470, 4556, 4768, 5066, 5360, 5695, 5960, 6432, 6834, 7152, 7599, 8040, 8160, 8940, 9112, 9983, 10132, 10720, 11390, 11920, 12665, 13668, 14304, 15198, 16080, 17085, 17880, 18224, 19966, 20264, 22780, 23840, 25330, 27336, 29949, 30396, 32160, 34170, 35760, 36448, 37995, 39932, 40528, 45560, 49915, 50660, 54672, 59898, 60792, 68340, 71520, 75990, 79864, 81056, 91120, 99830, 101320, 109344, 119796, 121584, 136680, 149745, 151980, 159728, 169711, 182240, 199660, 202640, 239592, 243168, 273360, 299490, 303960, 319456, 339422, 399320, 405280, 479184, 509133, 546720, 598980, 607920, 678844, 798640, 848555, 958368, 1018266, 1197960, 1215840, 1357688, 1597280, 1697110, 2036532, 2395920, 2545665, 2715376, 3394220, 4073064, 4791840, 5091330, 5430752, 6788440, 8146128, 10182660, 13576880, 16292256, 20365320, 27153760, 40730640, 81461280]

約数ペア:

[(1, 81461280), (2, 40730640), (3, 27153760), (4, 20365320), (5, 16292256), (6, 13576880), (8, 10182660), (10, 8146128), (12, 6788440), (15, 5430752), (16, 5091330), (17, 4791840), (20, 4073064), (24, 3394220), (30, 2715376), (32, 2545665), (34, 2395920), (40, 2036532), (48, 1697110), (51, 1597280), (60, 1357688), (67, 1215840), (68, 1197960), (80, 1018266), (85, 958368), (96, 848555), (102, 798640), (120, 678844), (134, 607920), (136, 598980), (149, 546720), (160, 509133), (170, 479184), (201, 405280), (204, 399320), (240, 339422), (255, 319456), (268, 303960), (272, 299490), (298, 273360), (335, 243168), (340, 239592), (402, 202640), (408, 199660), (447, 182240), (480, 169711), (510, 159728), (536, 151980), (544, 149745), (596, 136680), (670, 121584), (680, 119796), (745, 109344), (804, 101320), (816, 99830), (894, 91120), (1005, 81056), (1020, 79864), (1072, 75990), (1139, 71520), (1192, 68340), (1340, 60792), (1360, 59898), (1490, 54672), (1608, 50660), (1632, 49915), (1788, 45560), (2010, 40528), (2040, 39932), (2144, 37995), (2235, 36448), (2278, 35760), (2384, 34170), (2533, 32160), (2680, 30396), (2720, 29949), (2980, 27336), (3216, 25330), (3417, 23840), (3576, 22780), (4020, 20264), (4080, 19966), (4470, 18224), (4556, 17880), (4768, 17085), (5066, 16080), (5360, 15198), (5695, 14304), (5960, 13668), (6432, 12665), (6834, 11920), (7152, 11390), (7599, 10720), (8040, 10132), (8160, 9983), (8940, 9112)]