19837385

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{139}}^1$

素因数の和:257

約数の個数: 32

約数和(自身を含む): 26853120

約数和(自身を除く): 7015735

約数列:

[1, 5, 17, 23, 73, 85, 115, 139, 365, 391, 695, 1241, 1679, 1955, 2363, 3197, 6205, 8395, 10147, 11815, 15985, 28543, 50735, 54349, 142715, 172499, 233381, 271745, 862495, 1166905, 3967477, 19837385]

約数ペア:

[(1, 19837385), (5, 3967477), (17, 1166905), (23, 862495), (73, 271745), (85, 233381), (115, 172499), (139, 142715), (365, 54349), (391, 50735), (695, 28543), (1241, 15985), (1679, 11815), (1955, 10147), (2363, 8395), (3197, 6205)]