163968820

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{115471}}^1$

素因数の和:115551

約数の個数: 24

約数和(自身を含む): 349187328

約数和(自身を除く): 185218508

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 115471, 230942, 461884, 577355, 1154710, 2309420, 8198441, 16396882, 32793764, 40992205, 81984410, 163968820]

約数ペア:

[(1, 163968820), (2, 81984410), (4, 40992205), (5, 32793764), (10, 16396882), (20, 8198441), (71, 2309420), (142, 1154710), (284, 577355), (355, 461884), (710, 230942), (1420, 115471)]