18216440

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{2179}}^1$

素因数の和:2220

約数の個数: 64

約数和(自身を含む): 47088000

約数和(自身を除く): 28871560

約数列:

[1, 2, 4, 5, 8, 10, 11, 19, 20, 22, 38, 40, 44, 55, 76, 88, 95, 110, 152, 190, 209, 220, 380, 418, 440, 760, 836, 1045, 1672, 2090, 2179, 4180, 4358, 8360, 8716, 10895, 17432, 21790, 23969, 41401, 43580, 47938, 82802, 87160, 95876, 119845, 165604, 191752, 207005, 239690, 331208, 414010, 455411, 479380, 828020, 910822, 958760, 1656040, 1821644, 2277055, 3643288, 4554110, 9108220, 18216440]

約数ペア:

[(1, 18216440), (2, 9108220), (4, 4554110), (5, 3643288), (8, 2277055), (10, 1821644), (11, 1656040), (19, 958760), (20, 910822), (22, 828020), (38, 479380), (40, 455411), (44, 414010), (55, 331208), (76, 239690), (88, 207005), (95, 191752), (110, 165604), (152, 119845), (190, 95876), (209, 87160), (220, 82802), (380, 47938), (418, 43580), (440, 41401), (760, 23969), (836, 21790), (1045, 17432), (1672, 10895), (2090, 8716), (2179, 8360), (4180, 4358)]