21901749

素因数分解:

$3^1\times {\mathrm{41}}^2\times {\mathrm{43}}^1\times {\mathrm{101}}^1$

素因数の和:229

約数の個数: 24

約数和(自身を含む): 30931296

約数和(自身を除く): 9029547

約数列:

[1, 3, 41, 43, 101, 123, 129, 303, 1681, 1763, 4141, 4343, 5043, 5289, 12423, 13029, 72283, 169781, 178063, 216849, 509343, 534189, 7300583, 21901749]

約数ペア:

[(1, 21901749), (3, 7300583), (41, 534189), (43, 509343), (101, 216849), (123, 178063), (129, 169781), (303, 72283), (1681, 13029), (1763, 12423), (4141, 5289), (4343, 5043)]