21686290

素因数分解:

$2^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{97}}^1\times {\mathrm{283}}^1$

素因数の和:466

約数の個数: 32

約数和(自身を含む): 40078080

約数和(自身を除く): 18391790

約数列:

[1, 2, 5, 10, 79, 97, 158, 194, 283, 395, 485, 566, 790, 970, 1415, 2830, 7663, 15326, 22357, 27451, 38315, 44714, 54902, 76630, 111785, 137255, 223570, 274510, 2168629, 4337258, 10843145, 21686290]

約数ペア:

[(1, 21686290), (2, 10843145), (5, 4337258), (10, 2168629), (79, 274510), (97, 223570), (158, 137255), (194, 111785), (283, 76630), (395, 54902), (485, 44714), (566, 38315), (790, 27451), (970, 22357), (1415, 15326), (2830, 7663)]