21635642

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{163}}^1\times {\mathrm{499}}^1$

素因数の和:690

約数の個数: 32

約数和(自身を含む): 39360000

約数和(自身を除く): 17724358

約数列:

[1, 2, 7, 14, 19, 38, 133, 163, 266, 326, 499, 998, 1141, 2282, 3097, 3493, 6194, 6986, 9481, 18962, 21679, 43358, 66367, 81337, 132734, 162674, 569359, 1138718, 1545403, 3090806, 10817821, 21635642]

約数ペア:

[(1, 21635642), (2, 10817821), (7, 3090806), (14, 1545403), (19, 1138718), (38, 569359), (133, 162674), (163, 132734), (266, 81337), (326, 66367), (499, 43358), (998, 21679), (1141, 18962), (2282, 9481), (3097, 6986), (3493, 6194)]