68968520

素因数分解:

$2^3\times 5^1\times {\mathrm{257}}^1\times {\mathrm{6709}}^1$

素因数の和:6977

約数の個数: 32

約数和(自身を含む): 155806200

約数和(自身を除く): 86837680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 257, 514, 1028, 1285, 2056, 2570, 5140, 6709, 10280, 13418, 26836, 33545, 53672, 67090, 134180, 268360, 1724213, 3448426, 6896852, 8621065, 13793704, 17242130, 34484260, 68968520]

約数ペア:

[(1, 68968520), (2, 34484260), (4, 17242130), (5, 13793704), (8, 8621065), (10, 6896852), (20, 3448426), (40, 1724213), (257, 268360), (514, 134180), (1028, 67090), (1285, 53672), (2056, 33545), (2570, 26836), (5140, 13418), (6709, 10280)]