20943755

素因数分解:

$5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{97}}^1\times {\mathrm{199}}^1$

素因数の和:339

約数の個数: 32

約数和(自身を含む): 30105600

約数和(自身を除く): 9161845

約数列:

[1, 5, 7, 31, 35, 97, 155, 199, 217, 485, 679, 995, 1085, 1393, 3007, 3395, 6169, 6965, 15035, 19303, 21049, 30845, 43183, 96515, 105245, 135121, 215915, 598393, 675605, 2991965, 4188751, 20943755]

約数ペア:

[(1, 20943755), (5, 4188751), (7, 2991965), (31, 675605), (35, 598393), (97, 215915), (155, 135121), (199, 105245), (217, 96515), (485, 43183), (679, 30845), (995, 21049), (1085, 19303), (1393, 15035), (3007, 6965), (3395, 6169)]