18213657

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{2131}}^1$

素因数の和:2189

約数の個数: 32

約数和(自身を含む): 31110144

約数和(自身を除く): 12896487

約数列:

[1, 3, 7, 11, 21, 33, 37, 77, 111, 231, 259, 407, 777, 1221, 2131, 2849, 6393, 8547, 14917, 23441, 44751, 70323, 78847, 164087, 236541, 492261, 551929, 867317, 1655787, 2601951, 6071219, 18213657]

約数ペア:

[(1, 18213657), (3, 6071219), (7, 2601951), (11, 1655787), (21, 867317), (33, 551929), (37, 492261), (77, 236541), (111, 164087), (231, 78847), (259, 70323), (407, 44751), (777, 23441), (1221, 14917), (2131, 8547), (2849, 6393)]