18509440

素因数分解:

$2^7\times 5^1\times {\mathrm{28921}}^1$

素因数の和:28940

約数の個数: 32

約数和(自身を含む): 44250660

約数和(自身を除く): 25741220

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 28921, 57842, 115684, 144605, 231368, 289210, 462736, 578420, 925472, 1156840, 1850944, 2313680, 3701888, 4627360, 9254720, 18509440]

約数ペア:

[(1, 18509440), (2, 9254720), (4, 4627360), (5, 3701888), (8, 2313680), (10, 1850944), (16, 1156840), (20, 925472), (32, 578420), (40, 462736), (64, 289210), (80, 231368), (128, 144605), (160, 115684), (320, 57842), (640, 28921)]