21937149

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{251}}^1$

素因数の和:359

約数の個数: 40

約数和(自身を含む): 35858592

約数和(自身を除く): 13921443

約数列:

[1, 3, 9, 13, 27, 39, 81, 83, 117, 249, 251, 351, 747, 753, 1053, 1079, 2241, 2259, 3237, 3263, 6723, 6777, 9711, 9789, 20331, 20833, 29133, 29367, 62499, 87399, 88101, 187497, 264303, 270829, 562491, 812487, 1687473, 2437461, 7312383, 21937149]

約数ペア:

[(1, 21937149), (3, 7312383), (9, 2437461), (13, 1687473), (27, 812487), (39, 562491), (81, 270829), (83, 264303), (117, 187497), (249, 88101), (251, 87399), (351, 62499), (747, 29367), (753, 29133), (1053, 20833), (1079, 20331), (2241, 9789), (2259, 9711), (3237, 6777), (3263, 6723)]