28728895

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{25999}}^1$

素因数の和:26034

約数の個数: 16

約数和(自身を含む): 39312000

約数和(自身を除く): 10583105

約数列:

[1, 5, 13, 17, 65, 85, 221, 1105, 25999, 129995, 337987, 441983, 1689935, 2209915, 5745779, 28728895]

約数ペア:

[(1, 28728895), (5, 5745779), (13, 2209915), (17, 1689935), (65, 441983), (85, 337987), (221, 129995), (1105, 25999)]