21168225

素因数分解:

$3^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{7237}}^1$

素因数の和:7266

約数の個数: 36

約数和(自身を含む): 40836796

約数和(自身を除く): 19668571

約数列:

[1, 3, 5, 9, 13, 15, 25, 39, 45, 65, 75, 117, 195, 225, 325, 585, 975, 2925, 7237, 21711, 36185, 65133, 94081, 108555, 180925, 282243, 325665, 470405, 542775, 846729, 1411215, 1628325, 2352025, 4233645, 7056075, 21168225]

約数ペア:

[(1, 21168225), (3, 7056075), (5, 4233645), (9, 2352025), (13, 1628325), (15, 1411215), (25, 846729), (39, 542775), (45, 470405), (65, 325665), (75, 282243), (117, 180925), (195, 108555), (225, 94081), (325, 65133), (585, 36185), (975, 21711), (2925, 7237)]