21157887745

素因数分解:

$5^1\times {\mathrm{1013}}^1\times {\mathrm{1319}}^1\times {\mathrm{3167}}^1$

素因数の和:5504

約数の個数: 16

約数和(自身を含む): 25441827840

約数和(自身を除く): 4283940095

約数列:

[1, 5, 1013, 1319, 3167, 5065, 6595, 15835, 1336147, 3208171, 4177273, 6680735, 16040855, 20886365, 4231577549, 21157887745]

約数ペア:

[(1, 21157887745), (5, 4231577549), (1013, 20886365), (1319, 16040855), (3167, 6680735), (5065, 4177273), (6595, 3208171), (15835, 1336147)]