18639760

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{12263}}^1$

素因数の和:12295

約数の個数: 40

約数和(自身を含む): 45622080

約数和(自身を除く): 26982320

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 12263, 24526, 49052, 61315, 98104, 122630, 196208, 232997, 245260, 465994, 490520, 931988, 981040, 1164985, 1863976, 2329970, 3727952, 4659940, 9319880, 18639760]

約数ペア:

[(1, 18639760), (2, 9319880), (4, 4659940), (5, 3727952), (8, 2329970), (10, 1863976), (16, 1164985), (19, 981040), (20, 931988), (38, 490520), (40, 465994), (76, 245260), (80, 232997), (95, 196208), (152, 122630), (190, 98104), (304, 61315), (380, 49052), (760, 24526), (1520, 12263)]