20664525

素因数分解:

$3^1\times 5^2\times 7^2\times {\mathrm{5623}}^1$

素因数の和:5650

約数の個数: 36

約数和(自身を含む): 39750432

約数和(自身を除く): 19085907

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 49, 75, 105, 147, 175, 245, 525, 735, 1225, 3675, 5623, 16869, 28115, 39361, 84345, 118083, 140575, 196805, 275527, 421725, 590415, 826581, 984025, 1377635, 2952075, 4132905, 6888175, 20664525]

約数ペア:

[(1, 20664525), (3, 6888175), (5, 4132905), (7, 2952075), (15, 1377635), (21, 984025), (25, 826581), (35, 590415), (49, 421725), (75, 275527), (105, 196805), (147, 140575), (175, 118083), (245, 84345), (525, 39361), (735, 28115), (1225, 16869), (3675, 5623)]