18561140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71389}}^1$

素因数の和:71411

約数の個数: 24

約数和(自身を含む): 41977320

約数和(自身を除く): 23416180

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 71389, 142778, 285556, 356945, 713890, 928057, 1427780, 1856114, 3712228, 4640285, 9280570, 18561140]

約数ペア:

[(1, 18561140), (2, 9280570), (4, 4640285), (5, 3712228), (10, 1856114), (13, 1427780), (20, 928057), (26, 713890), (52, 356945), (65, 285556), (130, 142778), (260, 71389)]