21137607

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{109}}^1\times {\mathrm{743}}^1$

素因数の和:887

約数の個数: 24

約数和(自身を含む): 31917600

約数和(自身を除く): 10779993

約数列:

[1, 3, 9, 29, 87, 109, 261, 327, 743, 981, 2229, 3161, 6687, 9483, 21547, 28449, 64641, 80987, 193923, 242961, 728883, 2348623, 7045869, 21137607]

約数ペア:

[(1, 21137607), (3, 7045869), (9, 2348623), (29, 728883), (87, 242961), (109, 193923), (261, 80987), (327, 64641), (743, 28449), (981, 21547), (2229, 9483), (3161, 6687)]