21635505

素因数分解:

$3^5\times 5^1\times {\mathrm{17807}}^1$

素因数の和:17827

約数の個数: 24

約数和(自身を含む): 38892672

約数和(自身を除く): 17257167

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 1215, 17807, 53421, 89035, 160263, 267105, 480789, 801315, 1442367, 2403945, 4327101, 7211835, 21635505]

約数ペア:

[(1, 21635505), (3, 7211835), (5, 4327101), (9, 2403945), (15, 1442367), (27, 801315), (45, 480789), (81, 267105), (135, 160263), (243, 89035), (405, 53421), (1215, 17807)]