81279520

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{2341}}^1$

素因数の和:2394

約数の個数: 96

約数和(自身を含む): 226630656

約数和(自身を除く): 145351136

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 32, 35, 40, 56, 62, 70, 80, 112, 124, 140, 155, 160, 217, 224, 248, 280, 310, 434, 496, 560, 620, 868, 992, 1085, 1120, 1240, 1736, 2170, 2341, 2480, 3472, 4340, 4682, 4960, 6944, 8680, 9364, 11705, 16387, 17360, 18728, 23410, 32774, 34720, 37456, 46820, 65548, 72571, 74912, 81935, 93640, 131096, 145142, 163870, 187280, 262192, 290284, 327740, 362855, 374560, 507997, 524384, 580568, 655480, 725710, 1015994, 1161136, 1310960, 1451420, 2031988, 2322272, 2539985, 2621920, 2902840, 4063976, 5079970, 5805680, 8127952, 10159940, 11611360, 16255904, 20319880, 40639760, 81279520]

約数ペア:

[(1, 81279520), (2, 40639760), (4, 20319880), (5, 16255904), (7, 11611360), (8, 10159940), (10, 8127952), (14, 5805680), (16, 5079970), (20, 4063976), (28, 2902840), (31, 2621920), (32, 2539985), (35, 2322272), (40, 2031988), (56, 1451420), (62, 1310960), (70, 1161136), (80, 1015994), (112, 725710), (124, 655480), (140, 580568), (155, 524384), (160, 507997), (217, 374560), (224, 362855), (248, 327740), (280, 290284), (310, 262192), (434, 187280), (496, 163870), (560, 145142), (620, 131096), (868, 93640), (992, 81935), (1085, 74912), (1120, 72571), (1240, 65548), (1736, 46820), (2170, 37456), (2341, 34720), (2480, 32774), (3472, 23410), (4340, 18728), (4682, 17360), (4960, 16387), (6944, 11705), (8680, 9364)]