20500221995

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{181}}^1\times {\mathrm{20389}}^1$

素因数の和:20687

約数の個数: 32

約数和(自身を含む): 27253437120

約数和(自身を除く): 6753215125

約数列:

[1, 5, 11, 55, 101, 181, 505, 905, 1111, 1991, 5555, 9955, 18281, 20389, 91405, 101945, 201091, 224279, 1005455, 1121395, 2059289, 3690409, 10296445, 18452045, 22652179, 40594499, 113260895, 202972495, 372731309, 1863656545, 4100044399, 20500221995]

約数ペア:

[(1, 20500221995), (5, 4100044399), (11, 1863656545), (55, 372731309), (101, 202972495), (181, 113260895), (505, 40594499), (905, 22652179), (1111, 18452045), (1991, 10296445), (5555, 3690409), (9955, 2059289), (18281, 1121395), (20389, 1005455), (91405, 224279), (101945, 201091)]