128137490

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{75821}}^1$

素因数の和:75854

約数の個数: 24

約数和(自身を含む): 249757668

約数和(自身を除く): 121620178

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 169, 338, 845, 1690, 75821, 151642, 379105, 758210, 985673, 1971346, 4928365, 9856730, 12813749, 25627498, 64068745, 128137490]

約数ペア:

[(1, 128137490), (2, 64068745), (5, 25627498), (10, 12813749), (13, 9856730), (26, 4928365), (65, 1971346), (130, 985673), (169, 758210), (338, 379105), (845, 151642), (1690, 75821)]