21139900

素因数分解:

$2^2\times 5^2\times {\mathrm{179}}^1\times {\mathrm{1181}}^1$

素因数の和:1374

約数の個数: 36

約数和(自身を含む): 46168920

約数和(自身を除く): 25029020

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 179, 358, 716, 895, 1181, 1790, 2362, 3580, 4475, 4724, 5905, 8950, 11810, 17900, 23620, 29525, 59050, 118100, 211399, 422798, 845596, 1056995, 2113990, 4227980, 5284975, 10569950, 21139900]

約数ペア:

[(1, 21139900), (2, 10569950), (4, 5284975), (5, 4227980), (10, 2113990), (20, 1056995), (25, 845596), (50, 422798), (100, 211399), (179, 118100), (358, 59050), (716, 29525), (895, 23620), (1181, 17900), (1790, 11810), (2362, 8950), (3580, 5905), (4475, 4724)]