51664880

素因数分解:

$2^4\times 5^1\times {\mathrm{409}}^1\times {\mathrm{1579}}^1$

素因数の和:2001

約数の個数: 40

約数和(自身を含む): 120490800

約数和(自身を除く): 68825920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 409, 818, 1579, 1636, 2045, 3158, 3272, 4090, 6316, 6544, 7895, 8180, 12632, 15790, 16360, 25264, 31580, 32720, 63160, 126320, 645811, 1291622, 2583244, 3229055, 5166488, 6458110, 10332976, 12916220, 25832440, 51664880]

約数ペア:

[(1, 51664880), (2, 25832440), (4, 12916220), (5, 10332976), (8, 6458110), (10, 5166488), (16, 3229055), (20, 2583244), (40, 1291622), (80, 645811), (409, 126320), (818, 63160), (1579, 32720), (1636, 31580), (2045, 25264), (3158, 16360), (3272, 15790), (4090, 12632), (6316, 8180), (6544, 7895)]