21132705

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{211}}^1\times {\mathrm{607}}^1$

素因数の和:837

約数の個数: 32

約数和(自身を含む): 37122048

約数和(自身を除く): 15989343

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 211, 607, 633, 1055, 1821, 2321, 3035, 3165, 6677, 6963, 9105, 11605, 20031, 33385, 34815, 100155, 128077, 384231, 640385, 1408847, 1921155, 4226541, 7044235, 21132705]

約数ペア:

[(1, 21132705), (3, 7044235), (5, 4226541), (11, 1921155), (15, 1408847), (33, 640385), (55, 384231), (165, 128077), (211, 100155), (607, 34815), (633, 33385), (1055, 20031), (1821, 11605), (2321, 9105), (3035, 6963), (3165, 6677)]