21613767

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{613}}^1$

素因数の和:719

約数の個数: 32

約数和(自身を含む): 34894848

約数和(自身を除く): 13281081

約数列:

[1, 3, 7, 21, 23, 69, 73, 161, 219, 483, 511, 613, 1533, 1679, 1839, 4291, 5037, 11753, 12873, 14099, 35259, 42297, 44749, 98693, 134247, 296079, 313243, 939729, 1029227, 3087681, 7204589, 21613767]

約数ペア:

[(1, 21613767), (3, 7204589), (7, 3087681), (21, 1029227), (23, 939729), (69, 313243), (73, 296079), (161, 134247), (219, 98693), (483, 44749), (511, 42297), (613, 35259), (1533, 14099), (1679, 12873), (1839, 11753), (4291, 5037)]