20881518

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{541}}^1\times {\mathrm{919}}^1$

素因数の和:1472

約数の個数: 32

約数和(自身を含む): 47869440

約数和(自身を除く): 26987922

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 541, 919, 1082, 1623, 1838, 2757, 3246, 3787, 5514, 6433, 7574, 11361, 12866, 19299, 22722, 38598, 497179, 994358, 1491537, 2983074, 3480253, 6960506, 10440759, 20881518]

約数ペア:

[(1, 20881518), (2, 10440759), (3, 6960506), (6, 3480253), (7, 2983074), (14, 1491537), (21, 994358), (42, 497179), (541, 38598), (919, 22722), (1082, 19299), (1623, 12866), (1838, 11361), (2757, 7574), (3246, 6433), (3787, 5514)]