291237160

素因数分解:

$2^3\times 5^1\times {\mathrm{113}}^1\times {\mathrm{64433}}^1$

素因数の和:64557

約数の個数: 32

約数和(自身を含む): 661092840

約数和(自身を除く): 369855680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 113, 226, 452, 565, 904, 1130, 2260, 4520, 64433, 128866, 257732, 322165, 515464, 644330, 1288660, 2577320, 7280929, 14561858, 29123716, 36404645, 58247432, 72809290, 145618580, 291237160]

約数ペア:

[(1, 291237160), (2, 145618580), (4, 72809290), (5, 58247432), (8, 36404645), (10, 29123716), (20, 14561858), (40, 7280929), (113, 2577320), (226, 1288660), (452, 644330), (565, 515464), (904, 322165), (1130, 257732), (2260, 128866), (4520, 64433)]