647524540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{2490479}}^1$

素因数の和:2490501

約数の個数: 24

約数和(自身を含む): 1464402240

約数和(自身を除く): 816877700

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 2490479, 4980958, 9961916, 12452395, 24904790, 32376227, 49809580, 64752454, 129504908, 161881135, 323762270, 647524540]

約数ペア:

[(1, 647524540), (2, 323762270), (4, 161881135), (5, 129504908), (10, 64752454), (13, 49809580), (20, 32376227), (26, 24904790), (52, 12452395), (65, 9961916), (130, 4980958), (260, 2490479)]