25962820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{1637}}^1$

素因数の和:1720

約数の個数: 48

約数和(自身を含む): 59714928

約数和(自身を除く): 33752108

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 61, 65, 122, 130, 244, 260, 305, 610, 793, 1220, 1586, 1637, 3172, 3274, 3965, 6548, 7930, 8185, 15860, 16370, 21281, 32740, 42562, 85124, 99857, 106405, 199714, 212810, 399428, 425620, 499285, 998570, 1298141, 1997140, 2596282, 5192564, 6490705, 12981410, 25962820]

約数ペア:

[(1, 25962820), (2, 12981410), (4, 6490705), (5, 5192564), (10, 2596282), (13, 1997140), (20, 1298141), (26, 998570), (52, 499285), (61, 425620), (65, 399428), (122, 212810), (130, 199714), (244, 106405), (260, 99857), (305, 85124), (610, 42562), (793, 32740), (1220, 21281), (1586, 16370), (1637, 15860), (3172, 8185), (3274, 7930), (3965, 6548)]