21720216

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{129287}}^1$

素因数の和:129303

約数の個数: 32

約数和(自身を含む): 62058240

約数和(自身を除く): 40338024

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 56, 84, 168, 129287, 258574, 387861, 517148, 775722, 905009, 1034296, 1551444, 1810018, 2715027, 3102888, 3620036, 5430054, 7240072, 10860108, 21720216]

約数ペア:

[(1, 21720216), (2, 10860108), (3, 7240072), (4, 5430054), (6, 3620036), (7, 3102888), (8, 2715027), (12, 1810018), (14, 1551444), (21, 1034296), (24, 905009), (28, 775722), (42, 517148), (56, 387861), (84, 258574), (168, 129287)]