19980116

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{173}}^1\times {\mathrm{2221}}^1$

素因数の和:2411

約数の個数: 24

約数和(自身を含む): 37889544

約数和(自身を除く): 17909428

約数列:

[1, 2, 4, 13, 26, 52, 173, 346, 692, 2221, 2249, 4442, 4498, 8884, 8996, 28873, 57746, 115492, 384233, 768466, 1536932, 4995029, 9990058, 19980116]

約数ペア:

[(1, 19980116), (2, 9990058), (4, 4995029), (13, 1536932), (26, 768466), (52, 384233), (173, 115492), (346, 57746), (692, 28873), (2221, 8996), (2249, 8884), (4442, 4498)]