20565372680

素因数分解:

$2^3\times 5^1\times {\mathrm{3527}}^1\times {\mathrm{145771}}^1$

素因数の和:149309

約数の個数: 32

約数和(自身を含む): 46285525440

約数和(自身を除く): 25720152760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 3527, 7054, 14108, 17635, 28216, 35270, 70540, 141080, 145771, 291542, 583084, 728855, 1166168, 1457710, 2915420, 5830840, 514134317, 1028268634, 2056537268, 2570671585, 4113074536, 5141343170, 10282686340, 20565372680]

約数ペア:

[(1, 20565372680), (2, 10282686340), (4, 5141343170), (5, 4113074536), (8, 2570671585), (10, 2056537268), (20, 1028268634), (40, 514134317), (3527, 5830840), (7054, 2915420), (14108, 1457710), (17635, 1166168), (28216, 728855), (35270, 583084), (70540, 291542), (141080, 145771)]