71639620

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{4517}}^1$

素因数の和:4600

約数の個数: 48

約数和(自身を含む): 164708208

約数和(自身を除く): 93068588

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 61, 65, 122, 130, 244, 260, 305, 610, 793, 1220, 1586, 3172, 3965, 4517, 7930, 9034, 15860, 18068, 22585, 45170, 58721, 90340, 117442, 234884, 275537, 293605, 551074, 587210, 1102148, 1174420, 1377685, 2755370, 3581981, 5510740, 7163962, 14327924, 17909905, 35819810, 71639620]

約数ペア:

[(1, 71639620), (2, 35819810), (4, 17909905), (5, 14327924), (10, 7163962), (13, 5510740), (20, 3581981), (26, 2755370), (52, 1377685), (61, 1174420), (65, 1102148), (122, 587210), (130, 551074), (244, 293605), (260, 275537), (305, 234884), (610, 117442), (793, 90340), (1220, 58721), (1586, 45170), (3172, 22585), (3965, 18068), (4517, 15860), (7930, 9034)]