20412680

素因数分解:

$2^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{5261}}^1$

素因数の和:5369

約数の個数: 32

約数和(自身を含む): 46410840

約数和(自身を除く): 25998160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 97, 194, 388, 485, 776, 970, 1940, 3880, 5261, 10522, 21044, 26305, 42088, 52610, 105220, 210440, 510317, 1020634, 2041268, 2551585, 4082536, 5103170, 10206340, 20412680]

約数ペア:

[(1, 20412680), (2, 10206340), (4, 5103170), (5, 4082536), (8, 2551585), (10, 2041268), (20, 1020634), (40, 510317), (97, 210440), (194, 105220), (388, 52610), (485, 42088), (776, 26305), (970, 21044), (1940, 10522), (3880, 5261)]