12991760

素因数分解:

$2^4\times 5^1\times {\mathrm{251}}^1\times {\mathrm{647}}^1$

素因数の和:911

約数の個数: 40

約数和(自身を含む): 30373056

約数和(自身を除く): 17381296

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 251, 502, 647, 1004, 1255, 1294, 2008, 2510, 2588, 3235, 4016, 5020, 5176, 6470, 10040, 10352, 12940, 20080, 25880, 51760, 162397, 324794, 649588, 811985, 1299176, 1623970, 2598352, 3247940, 6495880, 12991760]

約数ペア:

[(1, 12991760), (2, 6495880), (4, 3247940), (5, 2598352), (8, 1623970), (10, 1299176), (16, 811985), (20, 649588), (40, 324794), (80, 162397), (251, 51760), (502, 25880), (647, 20080), (1004, 12940), (1255, 10352), (1294, 10040), (2008, 6470), (2510, 5176), (2588, 5020), (3235, 4016)]