18933369

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{223}}^1\times {\mathrm{311}}^1$

素因数の和:557

約数の個数: 32

約数和(自身を含む): 31309824

約数和(自身を除く): 12376455

約数列:

[1, 3, 7, 13, 21, 39, 91, 223, 273, 311, 669, 933, 1561, 2177, 2899, 4043, 4683, 6531, 8697, 12129, 20293, 28301, 60879, 69353, 84903, 208059, 485471, 901589, 1456413, 2704767, 6311123, 18933369]

約数ペア:

[(1, 18933369), (3, 6311123), (7, 2704767), (13, 1456413), (21, 901589), (39, 485471), (91, 208059), (223, 84903), (273, 69353), (311, 60879), (669, 28301), (933, 20293), (1561, 12129), (2177, 8697), (2899, 6531), (4043, 4683)]