15881990

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{22369}}^1$

素因数の和:22447

約数の個数: 16

約数和(自身を含む): 28991520

約数和(自身を除く): 13109530

約数列:

[1, 2, 5, 10, 71, 142, 355, 710, 22369, 44738, 111845, 223690, 1588199, 3176398, 7940995, 15881990]

約数ペア:

[(1, 15881990), (2, 7940995), (5, 3176398), (10, 1588199), (71, 223690), (142, 111845), (355, 44738), (710, 22369)]