21113785

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{173}}^1\times {\mathrm{317}}^1$

素因数の和:513

約数の個数: 32

約数和(自身を含む): 31871232

約数和(自身を除く): 10757447

約数列:

[1, 5, 7, 11, 35, 55, 77, 173, 317, 385, 865, 1211, 1585, 1903, 2219, 3487, 6055, 9515, 11095, 13321, 17435, 24409, 54841, 66605, 122045, 274205, 383887, 603251, 1919435, 3016255, 4222757, 21113785]

約数ペア:

[(1, 21113785), (5, 4222757), (7, 3016255), (11, 1919435), (35, 603251), (55, 383887), (77, 274205), (173, 122045), (317, 66605), (385, 54841), (865, 24409), (1211, 17435), (1585, 13321), (1903, 11095), (2219, 9515), (3487, 6055)]