21902175

素因数分解:

$3^2\times 5^2\times {\mathrm{311}}^1\times {\mathrm{313}}^1$

素因数の和:640

約数の個数: 36

約数和(自身を含む): 39481104

約数和(自身を除く): 17578929

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 225, 311, 313, 933, 939, 1555, 1565, 2799, 2817, 4665, 4695, 7775, 7825, 13995, 14085, 23325, 23475, 69975, 70425, 97343, 292029, 486715, 876087, 1460145, 2433575, 4380435, 7300725, 21902175]

約数ペア:

[(1, 21902175), (3, 7300725), (5, 4380435), (9, 2433575), (15, 1460145), (25, 876087), (45, 486715), (75, 292029), (225, 97343), (311, 70425), (313, 69975), (933, 23475), (939, 23325), (1555, 14085), (1565, 13995), (2799, 7825), (2817, 7775), (4665, 4695)]