25739740

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{98999}}^1$

素因数の和:99021

約数の個数: 24

約数和(自身を含む): 58212000

約数和(自身を除く): 32472260

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 98999, 197998, 395996, 494995, 989990, 1286987, 1979980, 2573974, 5147948, 6434935, 12869870, 25739740]

約数ペア:

[(1, 25739740), (2, 12869870), (4, 6434935), (5, 5147948), (10, 2573974), (13, 1979980), (20, 1286987), (26, 989990), (52, 494995), (65, 395996), (130, 197998), (260, 98999)]