19995318

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{4289}}^1$

素因数の和:4341

約数の個数: 48

約数和(自身を含む): 50862240

約数和(自身を除く): 30866922

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 37, 42, 63, 74, 111, 126, 222, 259, 333, 518, 666, 777, 1554, 2331, 4289, 4662, 8578, 12867, 25734, 30023, 38601, 60046, 77202, 90069, 158693, 180138, 270207, 317386, 476079, 540414, 952158, 1110851, 1428237, 2221702, 2856474, 3332553, 6665106, 9997659, 19995318]

約数ペア:

[(1, 19995318), (2, 9997659), (3, 6665106), (6, 3332553), (7, 2856474), (9, 2221702), (14, 1428237), (18, 1110851), (21, 952158), (37, 540414), (42, 476079), (63, 317386), (74, 270207), (111, 180138), (126, 158693), (222, 90069), (259, 77202), (333, 60046), (518, 38601), (666, 30023), (777, 25734), (1554, 12867), (2331, 8578), (4289, 4662)]