256688770

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{181}}^1\times {\mathrm{10909}}^1$

素因数の和:11110

約数の個数: 32

約数和(自身を含む): 500376240

約数和(自身を除く): 243687470

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 181, 362, 905, 1810, 2353, 4706, 10909, 11765, 21818, 23530, 54545, 109090, 141817, 283634, 709085, 1418170, 1974529, 3949058, 9872645, 19745290, 25668877, 51337754, 128344385, 256688770]

約数ペア:

[(1, 256688770), (2, 128344385), (5, 51337754), (10, 25668877), (13, 19745290), (26, 9872645), (65, 3949058), (130, 1974529), (181, 1418170), (362, 709085), (905, 283634), (1810, 141817), (2353, 109090), (4706, 54545), (10909, 23530), (11765, 21818)]