81761995

素因数分解:

$5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{227}}^1\times {\mathrm{251}}^1$

素因数の和:531

約数の個数: 32

約数和(自身を含む): 115831296

約数和(自身を除く): 34069301

約数列:

[1, 5, 7, 35, 41, 205, 227, 251, 287, 1135, 1255, 1435, 1589, 1757, 7945, 8785, 9307, 10291, 46535, 51455, 56977, 65149, 72037, 284885, 325745, 360185, 398839, 1994195, 2336057, 11680285, 16352399, 81761995]

約数ペア:

[(1, 81761995), (5, 16352399), (7, 11680285), (35, 2336057), (41, 1994195), (205, 398839), (227, 360185), (251, 325745), (287, 284885), (1135, 72037), (1255, 65149), (1435, 56977), (1589, 51455), (1757, 46535), (7945, 10291), (8785, 9307)]