21029780

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{107}}^1\times {\mathrm{317}}^1$

素因数の和:464

約数の個数: 48

約数和(自身を含む): 46158336

約数和(自身を除く): 25128556

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 107, 124, 155, 214, 310, 317, 428, 535, 620, 634, 1070, 1268, 1585, 2140, 3170, 3317, 6340, 6634, 9827, 13268, 16585, 19654, 33170, 33919, 39308, 49135, 66340, 67838, 98270, 135676, 169595, 196540, 339190, 678380, 1051489, 2102978, 4205956, 5257445, 10514890, 21029780]

約数ペア:

[(1, 21029780), (2, 10514890), (4, 5257445), (5, 4205956), (10, 2102978), (20, 1051489), (31, 678380), (62, 339190), (107, 196540), (124, 169595), (155, 135676), (214, 98270), (310, 67838), (317, 66340), (428, 49135), (535, 39308), (620, 33919), (634, 33170), (1070, 19654), (1268, 16585), (1585, 13268), (2140, 9827), (3170, 6634), (3317, 6340)]