20346280

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29921}}^1$

素因数の和:29949

約数の個数: 32

約数和(自身を含む): 48473640

約数和(自身を除く): 28127360

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 29921, 59842, 119684, 149605, 239368, 299210, 508657, 598420, 1017314, 1196840, 2034628, 2543285, 4069256, 5086570, 10173140, 20346280]

約数ペア:

[(1, 20346280), (2, 10173140), (4, 5086570), (5, 4069256), (8, 2543285), (10, 2034628), (17, 1196840), (20, 1017314), (34, 598420), (40, 508657), (68, 299210), (85, 239368), (136, 149605), (170, 119684), (340, 59842), (680, 29921)]