31252240

素因数分解:

$2^4\times 5^1\times {\mathrm{390653}}^1$

素因数の和:390666

約数の個数: 20

約数和(自身を含む): 72661644

約数和(自身を除く): 41409404

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 390653, 781306, 1562612, 1953265, 3125224, 3906530, 6250448, 7813060, 15626120, 31252240]

約数ペア:

[(1, 31252240), (2, 15626120), (4, 7813060), (5, 6250448), (8, 3906530), (10, 3125224), (16, 1953265), (20, 1562612), (40, 781306), (80, 390653)]