20817160

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1$

素因数の和:100

約数の個数: 192

約数和(自身を含む): 63201600

約数和(自身を除く): 42384440

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 19, 20, 26, 28, 35, 38, 40, 43, 49, 52, 56, 65, 70, 76, 86, 91, 95, 98, 104, 130, 133, 140, 152, 172, 182, 190, 196, 215, 245, 247, 260, 266, 280, 301, 344, 364, 380, 392, 430, 455, 490, 494, 520, 532, 559, 602, 637, 665, 728, 760, 817, 860, 910, 931, 980, 988, 1064, 1118, 1204, 1235, 1274, 1330, 1505, 1634, 1720, 1729, 1820, 1862, 1960, 1976, 2107, 2236, 2408, 2470, 2548, 2660, 2795, 3010, 3185, 3268, 3458, 3640, 3724, 3913, 4085, 4214, 4472, 4655, 4940, 5096, 5320, 5590, 5719, 6020, 6370, 6536, 6916, 7448, 7826, 8170, 8428, 8645, 9310, 9880, 10535, 10621, 11180, 11438, 12040, 12103, 12740, 13832, 15652, 16340, 16856, 17290, 18620, 19565, 21070, 21242, 22360, 22876, 24206, 25480, 27391, 28595, 31304, 32680, 34580, 37240, 39130, 40033, 42140, 42484, 45752, 48412, 53105, 54782, 57190, 60515, 69160, 74347, 78260, 80066, 84280, 84968, 96824, 106210, 109564, 114380, 121030, 136955, 148694, 156520, 160132, 200165, 212420, 219128, 228760, 242060, 273910, 297388, 320264, 371735, 400330, 424840, 484120, 520429, 547820, 594776, 743470, 800660, 1040858, 1095640, 1486940, 1601320, 2081716, 2602145, 2973880, 4163432, 5204290, 10408580, 20817160]

約数ペア:

[(1, 20817160), (2, 10408580), (4, 5204290), (5, 4163432), (7, 2973880), (8, 2602145), (10, 2081716), (13, 1601320), (14, 1486940), (19, 1095640), (20, 1040858), (26, 800660), (28, 743470), (35, 594776), (38, 547820), (40, 520429), (43, 484120), (49, 424840), (52, 400330), (56, 371735), (65, 320264), (70, 297388), (76, 273910), (86, 242060), (91, 228760), (95, 219128), (98, 212420), (104, 200165), (130, 160132), (133, 156520), (140, 148694), (152, 136955), (172, 121030), (182, 114380), (190, 109564), (196, 106210), (215, 96824), (245, 84968), (247, 84280), (260, 80066), (266, 78260), (280, 74347), (301, 69160), (344, 60515), (364, 57190), (380, 54782), (392, 53105), (430, 48412), (455, 45752), (490, 42484), (494, 42140), (520, 40033), (532, 39130), (559, 37240), (602, 34580), (637, 32680), (665, 31304), (728, 28595), (760, 27391), (817, 25480), (860, 24206), (910, 22876), (931, 22360), (980, 21242), (988, 21070), (1064, 19565), (1118, 18620), (1204, 17290), (1235, 16856), (1274, 16340), (1330, 15652), (1505, 13832), (1634, 12740), (1720, 12103), (1729, 12040), (1820, 11438), (1862, 11180), (1960, 10621), (1976, 10535), (2107, 9880), (2236, 9310), (2408, 8645), (2470, 8428), (2548, 8170), (2660, 7826), (2795, 7448), (3010, 6916), (3185, 6536), (3268, 6370), (3458, 6020), (3640, 5719), (3724, 5590), (3913, 5320), (4085, 5096), (4214, 4940), (4472, 4655)]