64706920

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{52183}}^1$

素因数の和:52225

約数の個数: 32

約数和(自身を含む): 150289920

約数和(自身を除く): 85583000

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 52183, 104366, 208732, 260915, 417464, 521830, 1043660, 1617673, 2087320, 3235346, 6470692, 8088365, 12941384, 16176730, 32353460, 64706920]

約数ペア:

[(1, 64706920), (2, 32353460), (4, 16176730), (5, 12941384), (8, 8088365), (10, 6470692), (20, 3235346), (31, 2087320), (40, 1617673), (62, 1043660), (124, 521830), (155, 417464), (248, 260915), (310, 208732), (620, 104366), (1240, 52183)]