20283991

素因数分解:

$7^3\times {\mathrm{13}}^1\times {\mathrm{4549}}^1$

素因数の和:4583

約数の個数: 16

約数和(自身を含む): 25480000

約数和(自身を除く): 5196009

約数列:

[1, 7, 13, 49, 91, 343, 637, 4459, 4549, 31843, 59137, 222901, 413959, 1560307, 2897713, 20283991]

約数ペア:

[(1, 20283991), (7, 2897713), (13, 1560307), (49, 413959), (91, 222901), (343, 59137), (637, 31843), (4459, 4549)]