21716585

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{271}}^1$

素因数の和:365

約数の個数: 32

約数和(自身を含む): 30081024

約数和(自身を除く): 8364439

約数列:

[1, 5, 11, 31, 47, 55, 155, 235, 271, 341, 517, 1355, 1457, 1705, 2585, 2981, 7285, 8401, 12737, 14905, 16027, 42005, 63685, 80135, 92411, 140107, 394847, 462055, 700535, 1974235, 4343317, 21716585]

約数ペア:

[(1, 21716585), (5, 4343317), (11, 1974235), (31, 700535), (47, 462055), (55, 394847), (155, 140107), (235, 92411), (271, 80135), (341, 63685), (517, 42005), (1355, 16027), (1457, 14905), (1705, 12737), (2585, 8401), (2981, 7285)]