4397240

素因数分解:

$2^3\times 5^1\times {\mathrm{211}}^1\times {\mathrm{521}}^1$

素因数の和:743

約数の個数: 32

約数和(自身を含む): 9959760

約数和(自身を除く): 5562520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 211, 422, 521, 844, 1042, 1055, 1688, 2084, 2110, 2605, 4168, 4220, 5210, 8440, 10420, 20840, 109931, 219862, 439724, 549655, 879448, 1099310, 2198620, 4397240]

約数ペア:

[(1, 4397240), (2, 2198620), (4, 1099310), (5, 879448), (8, 549655), (10, 439724), (20, 219862), (40, 109931), (211, 20840), (422, 10420), (521, 8440), (844, 5210), (1042, 4220), (1055, 4168), (1688, 2605), (2084, 2110)]