21519743

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{1831}}^1$

素因数の和:1934

約数の個数: 16

約数和(自身を含む): 26029056

約数和(自身を除く): 4509313

約数列:

[1, 7, 23, 73, 161, 511, 1679, 1831, 11753, 12817, 42113, 133663, 294791, 935641, 3074249, 21519743]

約数ペア:

[(1, 21519743), (7, 3074249), (23, 935641), (73, 294791), (161, 133663), (511, 42113), (1679, 12817), (1831, 11753)]