18976805

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{191}}^1\times {\mathrm{641}}^1$

素因数の和:868

約数の個数: 16

約数和(自身を含む): 23666688

約数和(自身を除く): 4689883

約数列:

[1, 5, 31, 155, 191, 641, 955, 3205, 5921, 19871, 29605, 99355, 122431, 612155, 3795361, 18976805]

約数ペア:

[(1, 18976805), (5, 3795361), (31, 612155), (155, 122431), (191, 99355), (641, 29605), (955, 19871), (3205, 5921)]