221892220

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{91691}}^1$

素因数の和:91722

約数の個数: 36

約数和(自身を含む): 512191512

約数和(自身を除く): 290299292

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 220, 242, 484, 605, 1210, 2420, 91691, 183382, 366764, 458455, 916910, 1008601, 1833820, 2017202, 4034404, 5043005, 10086010, 11094611, 20172020, 22189222, 44378444, 55473055, 110946110, 221892220]

約数ペア:

[(1, 221892220), (2, 110946110), (4, 55473055), (5, 44378444), (10, 22189222), (11, 20172020), (20, 11094611), (22, 10086010), (44, 5043005), (55, 4034404), (110, 2017202), (121, 1833820), (220, 1008601), (242, 916910), (484, 458455), (605, 366764), (1210, 183382), (2420, 91691)]