18905175

素因数分解:

$3^2\times 5^2\times {\mathrm{73}}^1\times {\mathrm{1151}}^1$

素因数の和:1240

約数の個数: 36

約数和(自身を含む): 34354944

約数和(自身を除く): 15449769

約数列:

[1, 3, 5, 9, 15, 25, 45, 73, 75, 219, 225, 365, 657, 1095, 1151, 1825, 3285, 3453, 5475, 5755, 10359, 16425, 17265, 28775, 51795, 84023, 86325, 252069, 258975, 420115, 756207, 1260345, 2100575, 3781035, 6301725, 18905175]

約数ペア:

[(1, 18905175), (3, 6301725), (5, 3781035), (9, 2100575), (15, 1260345), (25, 756207), (45, 420115), (73, 258975), (75, 252069), (219, 86325), (225, 84023), (365, 51795), (657, 28775), (1095, 17265), (1151, 16425), (1825, 10359), (3285, 5755), (3453, 5475)]