21969207

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{179}}^1\times {\mathrm{1049}}^1$

素因数の和:1247

約数の個数: 24

約数和(自身を含む): 34398000

約数和(自身を除く): 12428793

約数列:

[1, 3, 9, 13, 39, 117, 179, 537, 1049, 1611, 2327, 3147, 6981, 9441, 13637, 20943, 40911, 122733, 187771, 563313, 1689939, 2441023, 7323069, 21969207]

約数ペア:

[(1, 21969207), (3, 7323069), (9, 2441023), (13, 1689939), (39, 563313), (117, 187771), (179, 122733), (537, 40911), (1049, 20943), (1611, 13637), (2327, 9441), (3147, 6981)]