20041875

素因数分解:

$3^2\times 5^4\times 7^1\times {\mathrm{509}}^1$

素因数の和:542

約数の個数: 60

約数和(自身を含む): 41424240

約数和(自身を除く): 21382365

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 35, 45, 63, 75, 105, 125, 175, 225, 315, 375, 509, 525, 625, 875, 1125, 1527, 1575, 1875, 2545, 2625, 3563, 4375, 4581, 5625, 7635, 7875, 10689, 12725, 13125, 17815, 22905, 32067, 38175, 39375, 53445, 63625, 89075, 114525, 160335, 190875, 267225, 318125, 445375, 572625, 801675, 954375, 1336125, 2226875, 2863125, 4008375, 6680625, 20041875]

約数ペア:

[(1, 20041875), (3, 6680625), (5, 4008375), (7, 2863125), (9, 2226875), (15, 1336125), (21, 954375), (25, 801675), (35, 572625), (45, 445375), (63, 318125), (75, 267225), (105, 190875), (125, 160335), (175, 114525), (225, 89075), (315, 63625), (375, 53445), (509, 39375), (525, 38175), (625, 32067), (875, 22905), (1125, 17815), (1527, 13125), (1575, 12725), (1875, 10689), (2545, 7875), (2625, 7635), (3563, 5625), (4375, 4581)]