20279680

素因数分解:

$2^7\times 5^1\times {\mathrm{31687}}^1$

素因数の和:31706

約数の個数: 32

約数和(自身を含む): 48482640

約数和(自身を除く): 28202960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 31687, 63374, 126748, 158435, 253496, 316870, 506992, 633740, 1013984, 1267480, 2027968, 2534960, 4055936, 5069920, 10139840, 20279680]

約数ペア:

[(1, 20279680), (2, 10139840), (4, 5069920), (5, 4055936), (8, 2534960), (10, 2027968), (16, 1267480), (20, 1013984), (32, 633740), (40, 506992), (64, 316870), (80, 253496), (128, 158435), (160, 126748), (320, 63374), (640, 31687)]