21291741

素因数分解:

$3^4\times {\mathrm{83}}^1\times {\mathrm{3167}}^1$

素因数の和:3262

約数の個数: 20

約数和(自身を含む): 32199552

約数和(自身を除く): 10907811

約数列:

[1, 3, 9, 27, 81, 83, 249, 747, 2241, 3167, 6723, 9501, 28503, 85509, 256527, 262861, 788583, 2365749, 7097247, 21291741]

約数ペア:

[(1, 21291741), (3, 7097247), (9, 2365749), (27, 788583), (81, 262861), (83, 256527), (249, 85509), (747, 28503), (2241, 9501), (3167, 6723)]