28390265

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{151}}^1\times {\mathrm{1213}}^1$

素因数の和:1400

約数の個数: 16

約数和(自身を含む): 35429376

約数和(自身を除く): 7039111

約数列:

[1, 5, 31, 151, 155, 755, 1213, 4681, 6065, 23405, 37603, 183163, 188015, 915815, 5678053, 28390265]

約数ペア:

[(1, 28390265), (5, 5678053), (31, 915815), (151, 188015), (155, 183163), (755, 37603), (1213, 23405), (4681, 6065)]