21000844473

素因数分解:

$3^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{283}}^1\times {\mathrm{48407}}^1$

素因数の和:48773

約数の個数: 32

約数和(自身を含む): 32554960896

約数和(自身を除く): 11554116423

約数列:

[1, 3, 7, 21, 73, 219, 283, 511, 849, 1533, 1981, 5943, 20659, 48407, 61977, 144613, 145221, 338849, 433839, 1016547, 3533711, 10601133, 13699181, 24735977, 41097543, 74207931, 95894267, 287682801, 1000040213, 3000120639, 7000281491, 21000844473]

約数ペア:

[(1, 21000844473), (3, 7000281491), (7, 3000120639), (21, 1000040213), (73, 287682801), (219, 95894267), (283, 74207931), (511, 41097543), (849, 24735977), (1533, 13699181), (1981, 10601133), (5943, 3533711), (20659, 1016547), (48407, 433839), (61977, 338849), (144613, 145221)]