21204975

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{25703}}^1$

素因数の和:25727

約数の個数: 24

約数和(自身を含む): 38247552

約数和(自身を除く): 17042577

約数列:

[1, 3, 5, 11, 15, 25, 33, 55, 75, 165, 275, 825, 25703, 77109, 128515, 282733, 385545, 642575, 848199, 1413665, 1927725, 4240995, 7068325, 21204975]

約数ペア:

[(1, 21204975), (3, 7068325), (5, 4240995), (11, 1927725), (15, 1413665), (25, 848199), (33, 642575), (55, 385545), (75, 282733), (165, 128515), (275, 77109), (825, 25703)]