17781140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{68389}}^1$

素因数の和:68411

約数の個数: 24

約数和(自身を含む): 40213320

約数和(自身を除く): 22432180

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 68389, 136778, 273556, 341945, 683890, 889057, 1367780, 1778114, 3556228, 4445285, 8890570, 17781140]

約数ペア:

[(1, 17781140), (2, 8890570), (4, 4445285), (5, 3556228), (10, 1778114), (13, 1367780), (20, 889057), (26, 683890), (52, 341945), (65, 273556), (130, 136778), (260, 68389)]