20729025

素因数分解:

$3^2\times 5^2\times {\mathrm{181}}^1\times {\mathrm{509}}^1$

素因数の和:706

約数の個数: 36

約数和(自身を含む): 37406460

約数和(自身を除く): 16677435

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 181, 225, 509, 543, 905, 1527, 1629, 2545, 2715, 4525, 4581, 7635, 8145, 12725, 13575, 22905, 38175, 40725, 92129, 114525, 276387, 460645, 829161, 1381935, 2303225, 4145805, 6909675, 20729025]

約数ペア:

[(1, 20729025), (3, 6909675), (5, 4145805), (9, 2303225), (15, 1381935), (25, 829161), (45, 460645), (75, 276387), (181, 114525), (225, 92129), (509, 40725), (543, 38175), (905, 22905), (1527, 13575), (1629, 12725), (2545, 8145), (2715, 7635), (4525, 4581)]