161671820

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{260761}}^1$

素因数の和:260801

約数の個数: 24

約数和(自身を含む): 350464128

約数和(自身を除く): 188792308

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 260761, 521522, 1043044, 1303805, 2607610, 5215220, 8083591, 16167182, 32334364, 40417955, 80835910, 161671820]

約数ペア:

[(1, 161671820), (2, 80835910), (4, 40417955), (5, 32334364), (10, 16167182), (20, 8083591), (31, 5215220), (62, 2607610), (124, 1303805), (155, 1043044), (310, 521522), (620, 260761)]