21351375

素因数分解:

$3^2\times 5^3\times {\mathrm{18979}}^1$

素因数の和:19000

約数の個数: 24

約数和(自身を含む): 38491440

約数和(自身を除く): 17140065

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 125, 225, 375, 1125, 18979, 56937, 94895, 170811, 284685, 474475, 854055, 1423425, 2372375, 4270275, 7117125, 21351375]

約数ペア:

[(1, 21351375), (3, 7117125), (5, 4270275), (9, 2372375), (15, 1423425), (25, 854055), (45, 474475), (75, 284685), (125, 170811), (225, 94895), (375, 56937), (1125, 18979)]