21798135

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{21061}}^1$

素因数の和:21095

約数の個数: 24

約数和(自身を含む): 39428064

約数和(自身を除く): 17629929

約数列:

[1, 3, 5, 9, 15, 23, 45, 69, 115, 207, 345, 1035, 21061, 63183, 105305, 189549, 315915, 484403, 947745, 1453209, 2422015, 4359627, 7266045, 21798135]

約数ペア:

[(1, 21798135), (3, 7266045), (5, 4359627), (9, 2422015), (15, 1453209), (23, 947745), (45, 484403), (69, 315915), (115, 189549), (207, 105305), (345, 63183), (1035, 21061)]