20077960

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{71707}}^1$

素因数の和:71725

約数の個数: 32

約数和(自身を含む): 51629760

約数和(自身を除く): 31551800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 71707, 143414, 286828, 358535, 501949, 573656, 717070, 1003898, 1434140, 2007796, 2509745, 2868280, 4015592, 5019490, 10038980, 20077960]

約数ペア:

[(1, 20077960), (2, 10038980), (4, 5019490), (5, 4015592), (7, 2868280), (8, 2509745), (10, 2007796), (14, 1434140), (20, 1003898), (28, 717070), (35, 573656), (40, 501949), (56, 358535), (70, 286828), (140, 143414), (280, 71707)]