20408703

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{97}}^1\times {\mathrm{233}}^1$

素因数の和:383

約数の個数: 32

約数和(自身を含む): 32288256

約数和(自身を除く): 11879553

約数列:

[1, 3, 7, 21, 43, 97, 129, 233, 291, 301, 679, 699, 903, 1631, 2037, 4171, 4893, 10019, 12513, 22601, 29197, 30057, 67803, 70133, 87591, 158207, 210399, 474621, 971843, 2915529, 6802901, 20408703]

約数ペア:

[(1, 20408703), (3, 6802901), (7, 2915529), (21, 971843), (43, 474621), (97, 210399), (129, 158207), (233, 87591), (291, 70133), (301, 67803), (679, 30057), (699, 29197), (903, 22601), (1631, 12513), (2037, 10019), (4171, 4893)]