18657860

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71761}}^1$

素因数の和:71783

約数の個数: 24

約数和(自身を含む): 42196056

約数和(自身を除く): 23538196

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 71761, 143522, 287044, 358805, 717610, 932893, 1435220, 1865786, 3731572, 4664465, 9328930, 18657860]

約数ペア:

[(1, 18657860), (2, 9328930), (4, 4664465), (5, 3731572), (10, 1865786), (13, 1435220), (20, 932893), (26, 717610), (52, 358805), (65, 287044), (130, 143522), (260, 71761)]