21781566

素因数分解:

$2^1\times 3^2\times {\mathrm{67}}^1\times {\mathrm{18061}}^1$

素因数の和:18136

約数の個数: 24

約数和(自身を含む): 47900424

約数和(自身を除く): 26118858

約数列:

[1, 2, 3, 6, 9, 18, 67, 134, 201, 402, 603, 1206, 18061, 36122, 54183, 108366, 162549, 325098, 1210087, 2420174, 3630261, 7260522, 10890783, 21781566]

約数ペア:

[(1, 21781566), (2, 10890783), (3, 7260522), (6, 3630261), (9, 2420174), (18, 1210087), (67, 325098), (134, 162549), (201, 108366), (402, 54183), (603, 36122), (1206, 18061)]