21789135

素因数分解:

$3^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{1567}}^1$

素因数の和:1684

約数の個数: 32

約数和(自身を含む): 39137280

約数和(自身を除く): 17348145

約数列:

[1, 3, 5, 9, 15, 27, 45, 103, 135, 309, 515, 927, 1545, 1567, 2781, 4635, 4701, 7835, 13905, 14103, 23505, 42309, 70515, 161401, 211545, 484203, 807005, 1452609, 2421015, 4357827, 7263045, 21789135]

約数ペア:

[(1, 21789135), (3, 7263045), (5, 4357827), (9, 2421015), (15, 1452609), (27, 807005), (45, 484203), (103, 211545), (135, 161401), (309, 70515), (515, 42309), (927, 23505), (1545, 14103), (1567, 13905), (2781, 7835), (4635, 4701)]