209218225

素因数分解:

$5^2\times {\mathrm{31}}^1\times {\mathrm{499}}^1\times {\mathrm{541}}^1$

素因数の和:1081

約数の個数: 24

約数和(自身を含む): 268832000

約数和(自身を除く): 59613775

約数列:

[1, 5, 25, 31, 155, 499, 541, 775, 2495, 2705, 12475, 13525, 15469, 16771, 77345, 83855, 269959, 386725, 419275, 1349795, 6748975, 8368729, 41843645, 209218225]

約数ペア:

[(1, 209218225), (5, 41843645), (25, 8368729), (31, 6748975), (155, 1349795), (499, 419275), (541, 386725), (775, 269959), (2495, 83855), (2705, 77345), (12475, 16771), (13525, 15469)]