20159620

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{4561}}^1$

素因数の和:4600

約数の個数: 48

約数和(自身を含む): 48284208

約数和(自身を除く): 28124588

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 26, 34, 52, 65, 68, 85, 130, 170, 221, 260, 340, 442, 884, 1105, 2210, 4420, 4561, 9122, 18244, 22805, 45610, 59293, 77537, 91220, 118586, 155074, 237172, 296465, 310148, 387685, 592930, 775370, 1007981, 1185860, 1550740, 2015962, 4031924, 5039905, 10079810, 20159620]

約数ペア:

[(1, 20159620), (2, 10079810), (4, 5039905), (5, 4031924), (10, 2015962), (13, 1550740), (17, 1185860), (20, 1007981), (26, 775370), (34, 592930), (52, 387685), (65, 310148), (68, 296465), (85, 237172), (130, 155074), (170, 118586), (221, 91220), (260, 77537), (340, 59293), (442, 45610), (884, 22805), (1105, 18244), (2210, 9122), (4420, 4561)]