18865912

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{283}}^1\times {\mathrm{641}}^1$

素因数の和:943

約数の個数: 32

約数和(自身を含む): 38288880

約数和(自身を除く): 19422968

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 283, 566, 641, 1132, 1282, 2264, 2564, 3679, 5128, 7358, 8333, 14716, 16666, 29432, 33332, 66664, 181403, 362806, 725612, 1451224, 2358239, 4716478, 9432956, 18865912]

約数ペア:

[(1, 18865912), (2, 9432956), (4, 4716478), (8, 2358239), (13, 1451224), (26, 725612), (52, 362806), (104, 181403), (283, 66664), (566, 33332), (641, 29432), (1132, 16666), (1282, 14716), (2264, 8333), (2564, 7358), (3679, 5128)]