19972590

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{2087}}^1$

素因数の和:2137

約数の個数: 64

約数和(自身を含む): 54120960

約数和(自身を除く): 34148370

約数列:

[1, 2, 3, 5, 6, 10, 11, 15, 22, 29, 30, 33, 55, 58, 66, 87, 110, 145, 165, 174, 290, 319, 330, 435, 638, 870, 957, 1595, 1914, 2087, 3190, 4174, 4785, 6261, 9570, 10435, 12522, 20870, 22957, 31305, 45914, 60523, 62610, 68871, 114785, 121046, 137742, 181569, 229570, 302615, 344355, 363138, 605230, 665753, 688710, 907845, 1331506, 1815690, 1997259, 3328765, 3994518, 6657530, 9986295, 19972590]

約数ペア:

[(1, 19972590), (2, 9986295), (3, 6657530), (5, 3994518), (6, 3328765), (10, 1997259), (11, 1815690), (15, 1331506), (22, 907845), (29, 688710), (30, 665753), (33, 605230), (55, 363138), (58, 344355), (66, 302615), (87, 229570), (110, 181569), (145, 137742), (165, 121046), (174, 114785), (290, 68871), (319, 62610), (330, 60523), (435, 45914), (638, 31305), (870, 22957), (957, 20870), (1595, 12522), (1914, 10435), (2087, 9570), (3190, 6261), (4174, 4785)]