21870495

素因数分解:

$3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{16759}}^1$

素因数の和:16799

約数の個数: 24

約数和(自身を含む): 39218400

約数和(自身を除く): 17347905

約数列:

[1, 3, 5, 9, 15, 29, 45, 87, 145, 261, 435, 1305, 16759, 50277, 83795, 150831, 251385, 486011, 754155, 1458033, 2430055, 4374099, 7290165, 21870495]

約数ペア:

[(1, 21870495), (3, 7290165), (5, 4374099), (9, 2430055), (15, 1458033), (29, 754155), (45, 486011), (87, 251385), (145, 150831), (261, 83795), (435, 50277), (1305, 16759)]