641309875

素因数分解:

$5^3\times {\mathrm{83}}^1\times {\mathrm{61813}}^1$

素因数の和:61911

約数の個数: 16

約数和(自身を含む): 810010656

約数和(自身を除く): 168700781

約数列:

[1, 5, 25, 83, 125, 415, 2075, 10375, 61813, 309065, 1545325, 5130479, 7726625, 25652395, 128261975, 641309875]

約数ペア:

[(1, 641309875), (5, 128261975), (25, 25652395), (83, 7726625), (125, 5130479), (415, 1545325), (2075, 309065), (10375, 61813)]