31138480

素因数分解:

$2^4\times 5^1\times {\mathrm{389231}}^1$

素因数の和:389244

約数の個数: 20

約数和(自身を含む): 72397152

約数和(自身を除く): 41258672

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 389231, 778462, 1556924, 1946155, 3113848, 3892310, 6227696, 7784620, 15569240, 31138480]

約数ペア:

[(1, 31138480), (2, 15569240), (4, 7784620), (5, 6227696), (8, 3892310), (10, 3113848), (16, 1946155), (20, 1556924), (40, 778462), (80, 389231)]