21706040

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{6869}}^1$

素因数の和:6959

約数の個数: 32

約数和(自身を含む): 49464000

約数和(自身を除く): 27757960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 158, 316, 395, 632, 790, 1580, 3160, 6869, 13738, 27476, 34345, 54952, 68690, 137380, 274760, 542651, 1085302, 2170604, 2713255, 4341208, 5426510, 10853020, 21706040]

約数ペア:

[(1, 21706040), (2, 10853020), (4, 5426510), (5, 4341208), (8, 2713255), (10, 2170604), (20, 1085302), (40, 542651), (79, 274760), (158, 137380), (316, 68690), (395, 54952), (632, 34345), (790, 27476), (1580, 13738), (3160, 6869)]