21961305

素因数分解:

$3^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{3511}}^1$

素因数の和:3661

約数の個数: 24

約数和(自身を含む): 38351040

約数和(自身を除く): 16389735

約数列:

[1, 3, 5, 9, 15, 45, 139, 417, 695, 1251, 2085, 3511, 6255, 10533, 17555, 31599, 52665, 157995, 488029, 1464087, 2440145, 4392261, 7320435, 21961305]

約数ペア:

[(1, 21961305), (3, 7320435), (5, 4392261), (9, 2440145), (15, 1464087), (45, 488029), (139, 157995), (417, 52665), (695, 31599), (1251, 17555), (2085, 10533), (3511, 6255)]