18139220

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{2011}}^1$

素因数の和:2072

約数の個数: 48

約数和(自身を含む): 42590016

約数和(自身を除く): 24450796

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 41, 44, 55, 82, 110, 164, 205, 220, 410, 451, 820, 902, 1804, 2011, 2255, 4022, 4510, 8044, 9020, 10055, 20110, 22121, 40220, 44242, 82451, 88484, 110605, 164902, 221210, 329804, 412255, 442420, 824510, 906961, 1649020, 1813922, 3627844, 4534805, 9069610, 18139220]

約数ペア:

[(1, 18139220), (2, 9069610), (4, 4534805), (5, 3627844), (10, 1813922), (11, 1649020), (20, 906961), (22, 824510), (41, 442420), (44, 412255), (55, 329804), (82, 221210), (110, 164902), (164, 110605), (205, 88484), (220, 82451), (410, 44242), (451, 40220), (820, 22121), (902, 20110), (1804, 10055), (2011, 9020), (2255, 8044), (4022, 4510)]