99999820

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{121951}}^1$

素因数の和:122001

約数の個数: 24

約数和(自身を含む): 215123328

約数和(自身を除く): 115123508

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 121951, 243902, 487804, 609755, 1219510, 2439020, 4999991, 9999982, 19999964, 24999955, 49999910, 99999820]

約数ペア:

[(1, 99999820), (2, 49999910), (4, 24999955), (5, 19999964), (10, 9999982), (20, 4999991), (41, 2439020), (82, 1219510), (164, 609755), (205, 487804), (410, 243902), (820, 121951)]