21347960

素因数分解:

$2^3\times 5^1\times {\mathrm{113}}^1\times {\mathrm{4723}}^1$

素因数の和:4847

約数の個数: 32

約数和(自身を含む): 48468240

約数和(自身を除く): 27120280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 113, 226, 452, 565, 904, 1130, 2260, 4520, 4723, 9446, 18892, 23615, 37784, 47230, 94460, 188920, 533699, 1067398, 2134796, 2668495, 4269592, 5336990, 10673980, 21347960]

約数ペア:

[(1, 21347960), (2, 10673980), (4, 5336990), (5, 4269592), (8, 2668495), (10, 2134796), (20, 1067398), (40, 533699), (113, 188920), (226, 94460), (452, 47230), (565, 37784), (904, 23615), (1130, 18892), (2260, 9446), (4520, 4723)]