19981198

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{149}}^1\times {\mathrm{3529}}^1$

素因数の和:3699

約数の個数: 16

約数和(自身を含む): 31770000

約数和(自身を除く): 11788802

約数列:

[1, 2, 19, 38, 149, 298, 2831, 3529, 5662, 7058, 67051, 134102, 525821, 1051642, 9990599, 19981198]

約数ペア:

[(1, 19981198), (2, 9990599), (19, 1051642), (38, 525821), (149, 134102), (298, 67051), (2831, 7058), (3529, 5662)]