40807580

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{251}}^1\times {\mathrm{739}}^1$

素因数の和:1010

約数の個数: 48

約数和(自身を含む): 93985920

約数和(自身を除く): 53178340

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 251, 502, 739, 1004, 1255, 1478, 2510, 2761, 2956, 3695, 5020, 5522, 7390, 8129, 11044, 13805, 14780, 16258, 27610, 32516, 40645, 55220, 81290, 162580, 185489, 370978, 741956, 927445, 1854890, 2040379, 3709780, 4080758, 8161516, 10201895, 20403790, 40807580]

約数ペア:

[(1, 40807580), (2, 20403790), (4, 10201895), (5, 8161516), (10, 4080758), (11, 3709780), (20, 2040379), (22, 1854890), (44, 927445), (55, 741956), (110, 370978), (220, 185489), (251, 162580), (502, 81290), (739, 55220), (1004, 40645), (1255, 32516), (1478, 27610), (2510, 16258), (2761, 14780), (2956, 13805), (3695, 11044), (5020, 8129), (5522, 7390)]