64399840

素因数分解:

$2^5\times 5^1\times {\mathrm{71}}^1\times {\mathrm{5669}}^1$

素因数の和:5755

約数の個数: 48

約数和(自身を含む): 154314720

約数和(自身を除く): 89914880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 71, 80, 142, 160, 284, 355, 568, 710, 1136, 1420, 2272, 2840, 5669, 5680, 11338, 11360, 22676, 28345, 45352, 56690, 90704, 113380, 181408, 226760, 402499, 453520, 804998, 907040, 1609996, 2012495, 3219992, 4024990, 6439984, 8049980, 12879968, 16099960, 32199920, 64399840]

約数ペア:

[(1, 64399840), (2, 32199920), (4, 16099960), (5, 12879968), (8, 8049980), (10, 6439984), (16, 4024990), (20, 3219992), (32, 2012495), (40, 1609996), (71, 907040), (80, 804998), (142, 453520), (160, 402499), (284, 226760), (355, 181408), (568, 113380), (710, 90704), (1136, 56690), (1420, 45352), (2272, 28345), (2840, 22676), (5669, 11360), (5680, 11338)]