21660873

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{883}}^1$

素因数の和:953

約数の個数: 32

約数和(自身を含む): 33860736

約数和(自身を除く): 12199863

約数列:

[1, 3, 13, 17, 37, 39, 51, 111, 221, 481, 629, 663, 883, 1443, 1887, 2649, 8177, 11479, 15011, 24531, 32671, 34437, 45033, 98013, 195143, 424723, 555407, 585429, 1274169, 1666221, 7220291, 21660873]

約数ペア:

[(1, 21660873), (3, 7220291), (13, 1666221), (17, 1274169), (37, 585429), (39, 555407), (51, 424723), (111, 195143), (221, 98013), (481, 45033), (629, 34437), (663, 32671), (883, 24531), (1443, 15011), (1887, 11479), (2649, 8177)]