81380695

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{151}}^1\times {\mathrm{239}}^1$

素因数の和:447

約数の個数: 32

約数和(自身を含む): 110315520

約数和(自身を除く): 28934825

約数列:

[1, 5, 11, 41, 55, 151, 205, 239, 451, 755, 1195, 1661, 2255, 2629, 6191, 8305, 9799, 13145, 30955, 36089, 48995, 68101, 107789, 180445, 340505, 396979, 538945, 1479649, 1984895, 7398245, 16276139, 81380695]

約数ペア:

[(1, 81380695), (5, 16276139), (11, 7398245), (41, 1984895), (55, 1479649), (151, 538945), (205, 396979), (239, 340505), (451, 180445), (755, 107789), (1195, 68101), (1661, 48995), (2255, 36089), (2629, 30955), (6191, 13145), (8305, 9799)]