64465880

素因数分解:

$2^3\times 5^1\times {\mathrm{257}}^1\times {\mathrm{6271}}^1$

素因数の和:6539

約数の個数: 32

約数和(自身を含む): 145635840

約数和(自身を除く): 81169960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 257, 514, 1028, 1285, 2056, 2570, 5140, 6271, 10280, 12542, 25084, 31355, 50168, 62710, 125420, 250840, 1611647, 3223294, 6446588, 8058235, 12893176, 16116470, 32232940, 64465880]

約数ペア:

[(1, 64465880), (2, 32232940), (4, 16116470), (5, 12893176), (8, 8058235), (10, 6446588), (20, 3223294), (40, 1611647), (257, 250840), (514, 125420), (1028, 62710), (1285, 50168), (2056, 31355), (2570, 25084), (5140, 12542), (6271, 10280)]