31298480

素因数分解:

$2^4\times 5^1\times {\mathrm{391231}}^1$

素因数の和:391244

約数の個数: 20

約数和(自身を含む): 72769152

約数和(自身を除く): 41470672

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 391231, 782462, 1564924, 1956155, 3129848, 3912310, 6259696, 7824620, 15649240, 31298480]

約数ペア:

[(1, 31298480), (2, 15649240), (4, 7824620), (5, 6259696), (8, 3912310), (10, 3129848), (16, 1956155), (20, 1564924), (40, 782462), (80, 391231)]