21668140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{83339}}^1$

素因数の和:83361

約数の個数: 24

約数和(自身を含む): 49003920

約数和(自身を除く): 27335780

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 83339, 166678, 333356, 416695, 833390, 1083407, 1666780, 2166814, 4333628, 5417035, 10834070, 21668140]

約数ペア:

[(1, 21668140), (2, 10834070), (4, 5417035), (5, 4333628), (10, 2166814), (13, 1666780), (20, 1083407), (26, 833390), (52, 416695), (65, 333356), (130, 166678), (260, 83339)]