21018100

素因数分解:

$2^2\times 5^2\times {\mathrm{101}}^1\times {\mathrm{2081}}^1$

素因数の和:2196

約数の個数: 36

約数和(自身を含む): 46082988

約数和(自身を除く): 25064888

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 101, 202, 404, 505, 1010, 2020, 2081, 2525, 4162, 5050, 8324, 10100, 10405, 20810, 41620, 52025, 104050, 208100, 210181, 420362, 840724, 1050905, 2101810, 4203620, 5254525, 10509050, 21018100]

約数ペア:

[(1, 21018100), (2, 10509050), (4, 5254525), (5, 4203620), (10, 2101810), (20, 1050905), (25, 840724), (50, 420362), (100, 210181), (101, 208100), (202, 104050), (404, 52025), (505, 41620), (1010, 20810), (2020, 10405), (2081, 10100), (2525, 8324), (4162, 5050)]