31390640

素因数分解:

$2^4\times 5^1\times {\mathrm{392383}}^1$

素因数の和:392396

約数の個数: 20

約数和(自身を含む): 72983424

約数和(自身を除く): 41592784

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 392383, 784766, 1569532, 1961915, 3139064, 3923830, 6278128, 7847660, 15695320, 31390640]

約数ペア:

[(1, 31390640), (2, 15695320), (4, 7847660), (5, 6278128), (8, 3923830), (10, 3139064), (16, 1961915), (20, 1569532), (40, 784766), (80, 392383)]