21431566

素因数分解:

$2^1\times {\mathrm{13}}^2\times {\mathrm{163}}^1\times {\mathrm{389}}^1$

素因数の和:580

約数の個数: 24

約数和(自身を含む): 35114040

約数和(自身を除く): 13682474

約数列:

[1, 2, 13, 26, 163, 169, 326, 338, 389, 778, 2119, 4238, 5057, 10114, 27547, 55094, 63407, 65741, 126814, 131482, 824291, 1648582, 10715783, 21431566]

約数ペア:

[(1, 21431566), (2, 10715783), (13, 1648582), (26, 824291), (163, 131482), (169, 126814), (326, 65741), (338, 63407), (389, 55094), (778, 27547), (2119, 10114), (4238, 5057)]