19864978

素因数分解:

$2^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{107}}^1\times {\mathrm{149}}^1$

素因数の和:354

約数の個数: 32

約数和(自身を含む): 34992000

約数和(自身を除く): 15127022

約数列:

[1, 2, 7, 14, 89, 107, 149, 178, 214, 298, 623, 749, 1043, 1246, 1498, 2086, 9523, 13261, 15943, 19046, 26522, 31886, 66661, 92827, 111601, 133322, 185654, 223202, 1418927, 2837854, 9932489, 19864978]

約数ペア:

[(1, 19864978), (2, 9932489), (7, 2837854), (14, 1418927), (89, 223202), (107, 185654), (149, 133322), (178, 111601), (214, 92827), (298, 66661), (623, 31886), (749, 26522), (1043, 19046), (1246, 15943), (1498, 13261), (2086, 9523)]