128369540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{493729}}^1$

素因数の和:493751

約数の個数: 24

約数和(自身を含む): 290313240

約数和(自身を除く): 161943700

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 493729, 987458, 1974916, 2468645, 4937290, 6418477, 9874580, 12836954, 25673908, 32092385, 64184770, 128369540]

約数ペア:

[(1, 128369540), (2, 64184770), (4, 32092385), (5, 25673908), (10, 12836954), (13, 9874580), (20, 6418477), (26, 4937290), (52, 2468645), (65, 1974916), (130, 987458), (260, 493729)]