19918437

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^2\times {\mathrm{163}}^1$

素因数の和:230

約数の個数: 48

約数和(自身を含む): 34825728

約数和(自身を除く): 14907291

約数列:

[1, 3, 7, 11, 21, 23, 33, 69, 77, 161, 163, 231, 253, 483, 489, 529, 759, 1141, 1587, 1771, 1793, 3423, 3703, 3749, 5313, 5379, 5819, 11109, 11247, 12551, 17457, 26243, 37653, 40733, 41239, 78729, 86227, 122199, 123717, 258681, 288673, 603589, 866019, 948497, 1810767, 2845491, 6639479, 19918437]

約数ペア:

[(1, 19918437), (3, 6639479), (7, 2845491), (11, 1810767), (21, 948497), (23, 866019), (33, 603589), (69, 288673), (77, 258681), (161, 123717), (163, 122199), (231, 86227), (253, 78729), (483, 41239), (489, 40733), (529, 37653), (759, 26243), (1141, 17457), (1587, 12551), (1771, 11247), (1793, 11109), (3423, 5819), (3703, 5379), (3749, 5313)]