20164845040

素因数分解:

$2^4\times 5^1\times {\mathrm{919}}^1\times {\mathrm{274277}}^1$

素因数の和:275209

約数の個数: 40

約数和(自身を含む): 46934451360

約数和(自身を除く): 26769606320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 919, 1838, 3676, 4595, 7352, 9190, 14704, 18380, 36760, 73520, 274277, 548554, 1097108, 1371385, 2194216, 2742770, 4388432, 5485540, 10971080, 21942160, 252060563, 504121126, 1008242252, 1260302815, 2016484504, 2520605630, 4032969008, 5041211260, 10082422520, 20164845040]

約数ペア:

[(1, 20164845040), (2, 10082422520), (4, 5041211260), (5, 4032969008), (8, 2520605630), (10, 2016484504), (16, 1260302815), (20, 1008242252), (40, 504121126), (80, 252060563), (919, 21942160), (1838, 10971080), (3676, 5485540), (4595, 4388432), (7352, 2742770), (9190, 2194216), (14704, 1371385), (18380, 1097108), (36760, 548554), (73520, 274277)]