28229955

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{2039}}^1$

素因数の和:2131

約数の個数: 32

約数和(自身を含む): 49351680

約数和(自身を除く): 21121725

約数列:

[1, 3, 5, 13, 15, 39, 65, 71, 195, 213, 355, 923, 1065, 2039, 2769, 4615, 6117, 10195, 13845, 26507, 30585, 79521, 132535, 144769, 397605, 434307, 723845, 1881997, 2171535, 5645991, 9409985, 28229955]

約数ペア:

[(1, 28229955), (3, 9409985), (5, 5645991), (13, 2171535), (15, 1881997), (39, 723845), (65, 434307), (71, 397605), (195, 144769), (213, 132535), (355, 79521), (923, 30585), (1065, 26507), (2039, 13845), (2769, 10195), (4615, 6117)]