64823960

素因数分解:

$2^3\times 5^1\times {\mathrm{971}}^1\times {\mathrm{1669}}^1$

素因数の和:2651

約数の個数: 32

約数和(自身を含む): 146091600

約数和(自身を除く): 81267640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 971, 1669, 1942, 3338, 3884, 4855, 6676, 7768, 8345, 9710, 13352, 16690, 19420, 33380, 38840, 66760, 1620599, 3241198, 6482396, 8102995, 12964792, 16205990, 32411980, 64823960]

約数ペア:

[(1, 64823960), (2, 32411980), (4, 16205990), (5, 12964792), (8, 8102995), (10, 6482396), (20, 3241198), (40, 1620599), (971, 66760), (1669, 38840), (1942, 33380), (3338, 19420), (3884, 16690), (4855, 13352), (6676, 9710), (7768, 8345)]