289311640

素因数分解:

$2^3\times 5^1\times {\mathrm{113}}^1\times {\mathrm{64007}}^1$

素因数の和:64131

約数の個数: 32

約数和(自身を含む): 656722080

約数和(自身を除く): 367410440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 113, 226, 452, 565, 904, 1130, 2260, 4520, 64007, 128014, 256028, 320035, 512056, 640070, 1280140, 2560280, 7232791, 14465582, 28931164, 36163955, 57862328, 72327910, 144655820, 289311640]

約数ペア:

[(1, 289311640), (2, 144655820), (4, 72327910), (5, 57862328), (8, 36163955), (10, 28931164), (20, 14465582), (40, 7232791), (113, 2560280), (226, 1280140), (452, 640070), (565, 512056), (904, 320035), (1130, 256028), (2260, 128014), (4520, 64007)]