219779780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{179}}^1\times {\mathrm{5581}}^1$

素因数の和:5780

約数の個数: 48

約数和(自身を含む): 506399040

約数和(自身を除く): 286619260

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 179, 220, 358, 716, 895, 1790, 1969, 3580, 3938, 5581, 7876, 9845, 11162, 19690, 22324, 27905, 39380, 55810, 61391, 111620, 122782, 245564, 306955, 613910, 998999, 1227820, 1997998, 3995996, 4994995, 9989990, 10988989, 19979980, 21977978, 43955956, 54944945, 109889890, 219779780]

約数ペア:

[(1, 219779780), (2, 109889890), (4, 54944945), (5, 43955956), (10, 21977978), (11, 19979980), (20, 10988989), (22, 9989990), (44, 4994995), (55, 3995996), (110, 1997998), (179, 1227820), (220, 998999), (358, 613910), (716, 306955), (895, 245564), (1790, 122782), (1969, 111620), (3580, 61391), (3938, 55810), (5581, 39380), (7876, 27905), (9845, 22324), (11162, 19690)]