21805070

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{181}}^1\times {\mathrm{1721}}^1$

素因数の和:1916

約数の個数: 32

約数和(自身を含む): 45130176

約数和(自身を除く): 23325106

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 181, 362, 905, 1267, 1721, 1810, 2534, 3442, 6335, 8605, 12047, 12670, 17210, 24094, 60235, 120470, 311501, 623002, 1557505, 2180507, 3115010, 4361014, 10902535, 21805070]

約数ペア:

[(1, 21805070), (2, 10902535), (5, 4361014), (7, 3115010), (10, 2180507), (14, 1557505), (35, 623002), (70, 311501), (181, 120470), (362, 60235), (905, 24094), (1267, 17210), (1721, 12670), (1810, 12047), (2534, 8605), (3442, 6335)]