21904551

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{2347}}^1$

素因数の和:2431

約数の個数: 24

約数和(自身を含む): 34064784

約数和(自身を除く): 12160233

約数列:

[1, 3, 9, 17, 51, 61, 153, 183, 549, 1037, 2347, 3111, 7041, 9333, 21123, 39899, 119697, 143167, 359091, 429501, 1288503, 2433839, 7301517, 21904551]

約数ペア:

[(1, 21904551), (3, 7301517), (9, 2433839), (17, 1288503), (51, 429501), (61, 359091), (153, 143167), (183, 119697), (549, 39899), (1037, 21123), (2347, 9333), (3111, 7041)]