21753340

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{155381}}^1$

素因数の和:155397

約数の個数: 24

約数和(自身を含む): 52208352

約数和(自身を除く): 30455012

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 155381, 310762, 621524, 776905, 1087667, 1553810, 2175334, 3107620, 4350668, 5438335, 10876670, 21753340]

約数ペア:

[(1, 21753340), (2, 10876670), (4, 5438335), (5, 4350668), (7, 3107620), (10, 2175334), (14, 1553810), (20, 1087667), (28, 776905), (35, 621524), (70, 310762), (140, 155381)]