28098009

素因数分解:

$3^4\times {\mathrm{79}}^1\times {\mathrm{4391}}^1$

素因数の和:4482

約数の個数: 20

約数和(自身を含む): 42514560

約数和(自身を除く): 14416551

約数列:

[1, 3, 9, 27, 79, 81, 237, 711, 2133, 4391, 6399, 13173, 39519, 118557, 346889, 355671, 1040667, 3122001, 9366003, 28098009]

約数ペア:

[(1, 28098009), (3, 9366003), (9, 3122001), (27, 1040667), (79, 355671), (81, 346889), (237, 118557), (711, 39519), (2133, 13173), (4391, 6399)]