19965488

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{40253}}^1$

素因数の和:40292

約数の個数: 20

約数和(自身を含む): 39931968

約数和(自身を除く): 19966480

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 40253, 80506, 161012, 322024, 644048, 1247843, 2495686, 4991372, 9982744, 19965488]

約数ペア:

[(1, 19965488), (2, 9982744), (4, 4991372), (8, 2495686), (16, 1247843), (31, 644048), (62, 322024), (124, 161012), (248, 80506), (496, 40253)]