20513925

素因数分解:

$3^3\times 5^2\times {\mathrm{30391}}^1$

素因数の和:30410

約数の個数: 24

約数和(自身を含む): 37686080

約数和(自身を除く): 17172155

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 135, 225, 675, 30391, 91173, 151955, 273519, 455865, 759775, 820557, 1367595, 2279325, 4102785, 6837975, 20513925]

約数ペア:

[(1, 20513925), (3, 6837975), (5, 4102785), (9, 2279325), (15, 1367595), (25, 820557), (27, 759775), (45, 455865), (75, 273519), (135, 151955), (225, 91173), (675, 30391)]