31801480

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{8933}}^1$

素因数の和:9033

約数の個数: 32

約数和(自身を含む): 72365400

約数和(自身を除く): 40563920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 8933, 17866, 35732, 44665, 71464, 89330, 178660, 357320, 795037, 1590074, 3180148, 3975185, 6360296, 7950370, 15900740, 31801480]

約数ペア:

[(1, 31801480), (2, 15900740), (4, 7950370), (5, 6360296), (8, 3975185), (10, 3180148), (20, 1590074), (40, 795037), (89, 357320), (178, 178660), (356, 89330), (445, 71464), (712, 44665), (890, 35732), (1780, 17866), (3560, 8933)]