205964525

素因数分解:

$5^2\times {\mathrm{13}}^2\times {\mathrm{29}}^1\times {\mathrm{41}}^2$

素因数の和:147

約数の個数: 54

約数和(自身を含む): 293237370

約数和(自身を除く): 87272845

約数列:

[1, 5, 13, 25, 29, 41, 65, 145, 169, 205, 325, 377, 533, 725, 845, 1025, 1189, 1681, 1885, 2665, 4225, 4901, 5945, 6929, 8405, 9425, 13325, 15457, 21853, 24505, 29725, 34645, 42025, 48749, 77285, 109265, 122525, 173225, 200941, 243745, 284089, 386425, 546325, 633737, 1004705, 1218725, 1420445, 3168685, 5023525, 7102225, 8238581, 15843425, 41192905, 205964525]

約数ペア:

[(1, 205964525), (5, 41192905), (13, 15843425), (25, 8238581), (29, 7102225), (41, 5023525), (65, 3168685), (145, 1420445), (169, 1218725), (205, 1004705), (325, 633737), (377, 546325), (533, 386425), (725, 284089), (845, 243745), (1025, 200941), (1189, 173225), (1681, 122525), (1885, 109265), (2665, 77285), (4225, 48749), (4901, 42025), (5945, 34645), (6929, 29725), (8405, 24505), (9425, 21853), (13325, 15457)]