18927887

素因数分解:

${\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{1181}}^1$

素因数の和:1270

約数の個数: 16

約数和(自身を含む): 21786624

約数和(自身を除く): 2858737

約数列:

[1, 11, 31, 47, 341, 517, 1181, 1457, 12991, 16027, 36611, 55507, 402721, 610577, 1720717, 18927887]

約数ペア:

[(1, 18927887), (11, 1720717), (31, 610577), (47, 402721), (341, 55507), (517, 36611), (1181, 16027), (1457, 12991)]