28115775

素因数分解:

$3^3\times 5^2\times {\mathrm{23}}^1\times {\mathrm{1811}}^1$

素因数の和:1853

約数の個数: 48

約数和(自身を含む): 53925120

約数和(自身を除く): 25809345

約数列:

[1, 3, 5, 9, 15, 23, 25, 27, 45, 69, 75, 115, 135, 207, 225, 345, 575, 621, 675, 1035, 1725, 1811, 3105, 5175, 5433, 9055, 15525, 16299, 27165, 41653, 45275, 48897, 81495, 124959, 135825, 208265, 244485, 374877, 407475, 624795, 1041325, 1124631, 1222425, 1874385, 3123975, 5623155, 9371925, 28115775]

約数ペア:

[(1, 28115775), (3, 9371925), (5, 5623155), (9, 3123975), (15, 1874385), (23, 1222425), (25, 1124631), (27, 1041325), (45, 624795), (69, 407475), (75, 374877), (115, 244485), (135, 208265), (207, 135825), (225, 124959), (345, 81495), (575, 48897), (621, 45275), (675, 41653), (1035, 27165), (1725, 16299), (1811, 15525), (3105, 9055), (5175, 5433)]