21581037

素因数分解:

$3^2\times {\mathrm{47}}^1\times {\mathrm{163}}^1\times {\mathrm{313}}^1$

素因数の和:529

約数の個数: 24

約数和(自身を含む): 32133504

約数和(自身を除く): 10552467

約数列:

[1, 3, 9, 47, 141, 163, 313, 423, 489, 939, 1467, 2817, 7661, 14711, 22983, 44133, 51019, 68949, 132399, 153057, 459171, 2397893, 7193679, 21581037]

約数ペア:

[(1, 21581037), (3, 7193679), (9, 2397893), (47, 459171), (141, 153057), (163, 132399), (313, 68949), (423, 51019), (489, 44133), (939, 22983), (1467, 14711), (2817, 7661)]