25259090

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{101}}^1\times {\mathrm{281}}^1$

素因数の和:478

約数の個数: 32

約数和(自身を含む): 46597680

約数和(自身を除く): 21338590

約数列:

[1, 2, 5, 10, 89, 101, 178, 202, 281, 445, 505, 562, 890, 1010, 1405, 2810, 8989, 17978, 25009, 28381, 44945, 50018, 56762, 89890, 125045, 141905, 250090, 283810, 2525909, 5051818, 12629545, 25259090]

約数ペア:

[(1, 25259090), (2, 12629545), (5, 5051818), (10, 2525909), (89, 283810), (101, 250090), (178, 141905), (202, 125045), (281, 89890), (445, 56762), (505, 50018), (562, 44945), (890, 28381), (1010, 25009), (1405, 17978), (2810, 8989)]