208712855

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{263}}^1\times {\mathrm{421}}^1$

素因数の和:731

約数の個数: 32

約数和(自身を含む): 280748160

約数和(自身を除く): 72035305

約数列:

[1, 5, 13, 29, 65, 145, 263, 377, 421, 1315, 1885, 2105, 3419, 5473, 7627, 12209, 17095, 27365, 38135, 61045, 99151, 110723, 158717, 495755, 553615, 793585, 1439399, 3210967, 7196995, 16054835, 41742571, 208712855]

約数ペア:

[(1, 208712855), (5, 41742571), (13, 16054835), (29, 7196995), (65, 3210967), (145, 1439399), (263, 793585), (377, 553615), (421, 495755), (1315, 158717), (1885, 110723), (2105, 99151), (3419, 61045), (5473, 38135), (7627, 27365), (12209, 17095)]