19388528

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{28181}}^1$

素因数の和:28232

約数の個数: 20

約数和(自身を含む): 38440248

約数和(自身を除く): 19051720

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 344, 688, 28181, 56362, 112724, 225448, 450896, 1211783, 2423566, 4847132, 9694264, 19388528]

約数ペア:

[(1, 19388528), (2, 9694264), (4, 4847132), (8, 2423566), (16, 1211783), (43, 450896), (86, 225448), (172, 112724), (344, 56362), (688, 28181)]