19900894

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{137}}^1\times {\mathrm{151}}^1$

素因数の和:340

約数の個数: 32

約数和(自身を含む): 33477696

約数和(自身を除く): 13576802

約数列:

[1, 2, 13, 26, 37, 74, 137, 151, 274, 302, 481, 962, 1781, 1963, 3562, 3926, 5069, 5587, 10138, 11174, 20687, 41374, 65897, 72631, 131794, 145262, 268931, 537862, 765419, 1530838, 9950447, 19900894]

約数ペア:

[(1, 19900894), (2, 9950447), (13, 1530838), (26, 765419), (37, 537862), (74, 268931), (137, 145262), (151, 131794), (274, 72631), (302, 65897), (481, 41374), (962, 20687), (1781, 11174), (1963, 10138), (3562, 5587), (3926, 5069)]