80494375

素因数分解:

$5^4\times {\mathrm{13}}^1\times {\mathrm{9907}}^1$

素因数の和:9940

約数の個数: 20

約数和(自身を含む): 108334072

約数和(自身を除く): 27839697

約数列:

[1, 5, 13, 25, 65, 125, 325, 625, 1625, 8125, 9907, 49535, 128791, 247675, 643955, 1238375, 3219775, 6191875, 16098875, 80494375]

約数ペア:

[(1, 80494375), (5, 16098875), (13, 6191875), (25, 3219775), (65, 1238375), (125, 643955), (325, 247675), (625, 128791), (1625, 49535), (8125, 9907)]