28387653

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{71147}}^1$

素因数の和:71176

約数の個数: 16

約数和(自身を含む): 45534720

約数和(自身を除く): 17147067

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 71147, 213441, 498029, 1351793, 1494087, 4055379, 9462551, 28387653]

約数ペア:

[(1, 28387653), (3, 9462551), (7, 4055379), (19, 1494087), (21, 1351793), (57, 498029), (133, 213441), (399, 71147)]