65880025

素因数分解:

$5^2\times {\mathrm{29}}^1\times {\mathrm{89}}^1\times {\mathrm{1021}}^1$

素因数の和:1149

約数の個数: 24

約数和(自身を含む): 85541400

約数和(自身を除く): 19661375

約数列:

[1, 5, 25, 29, 89, 145, 445, 725, 1021, 2225, 2581, 5105, 12905, 25525, 29609, 64525, 90869, 148045, 454345, 740225, 2271725, 2635201, 13176005, 65880025]

約数ペア:

[(1, 65880025), (5, 13176005), (25, 2635201), (29, 2271725), (89, 740225), (145, 454345), (445, 148045), (725, 90869), (1021, 64525), (2225, 29609), (2581, 25525), (5105, 12905)]