31306480

素因数分解:

$2^4\times 5^1\times {\mathrm{391331}}^1$

素因数の和:391344

約数の個数: 20

約数和(自身を含む): 72787752

約数和(自身を除く): 41481272

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 391331, 782662, 1565324, 1956655, 3130648, 3913310, 6261296, 7826620, 15653240, 31306480]

約数ペア:

[(1, 31306480), (2, 15653240), (4, 7826620), (5, 6261296), (8, 3913310), (10, 3130648), (16, 1956655), (20, 1565324), (40, 782662), (80, 391331)]