20781375

素因数分解:

$3^1\times 5^3\times {\mathrm{151}}^1\times {\mathrm{367}}^1$

素因数の和:536

約数の個数: 32

約数和(自身を含む): 34904064

約数和(自身を除く): 14122689

約数列:

[1, 3, 5, 15, 25, 75, 125, 151, 367, 375, 453, 755, 1101, 1835, 2265, 3775, 5505, 9175, 11325, 18875, 27525, 45875, 55417, 56625, 137625, 166251, 277085, 831255, 1385425, 4156275, 6927125, 20781375]

約数ペア:

[(1, 20781375), (3, 6927125), (5, 4156275), (15, 1385425), (25, 831255), (75, 277085), (125, 166251), (151, 137625), (367, 56625), (375, 55417), (453, 45875), (755, 27525), (1101, 18875), (1835, 11325), (2265, 9175), (3775, 5505)]