81310355

素因数分解:

$5^1\times 7^2\times {\mathrm{79}}^1\times {\mathrm{4201}}^1$

素因数の和:4299

約数の個数: 24

約数和(自身を含む): 114966720

約数和(自身を除く): 33656365

約数列:

[1, 5, 7, 35, 49, 79, 245, 395, 553, 2765, 3871, 4201, 19355, 21005, 29407, 147035, 205849, 331879, 1029245, 1659395, 2323153, 11615765, 16262071, 81310355]

約数ペア:

[(1, 81310355), (5, 16262071), (7, 11615765), (35, 2323153), (49, 1659395), (79, 1029245), (245, 331879), (395, 205849), (553, 147035), (2765, 29407), (3871, 21005), (4201, 19355)]