28139811

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{78823}}^1$

素因数の和:78850

約数の個数: 16

約数和(自身を含む): 45402624

約数和(自身を除く): 17262813

約数列:

[1, 3, 7, 17, 21, 51, 119, 357, 78823, 236469, 551761, 1339991, 1655283, 4019973, 9379937, 28139811]

約数ペア:

[(1, 28139811), (3, 9379937), (7, 4019973), (17, 1655283), (21, 1339991), (51, 551761), (119, 236469), (357, 78823)]