71126920

素因数分解:

$2^3\times 5^1\times {\mathrm{521}}^1\times {\mathrm{3413}}^1$

素因数の和:3945

約数の個数: 32

約数和(自身を含む): 160389720

約数和(自身を除く): 89262800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 521, 1042, 2084, 2605, 3413, 4168, 5210, 6826, 10420, 13652, 17065, 20840, 27304, 34130, 68260, 136520, 1778173, 3556346, 7112692, 8890865, 14225384, 17781730, 35563460, 71126920]

約数ペア:

[(1, 71126920), (2, 35563460), (4, 17781730), (5, 14225384), (8, 8890865), (10, 7112692), (20, 3556346), (40, 1778173), (521, 136520), (1042, 68260), (2084, 34130), (2605, 27304), (3413, 20840), (4168, 17065), (5210, 13652), (6826, 10420)]