17720960

素因数分解:

$2^7\times 5^1\times {\mathrm{27689}}^1$

素因数の和:27708

約数の個数: 32

約数和(自身を含む): 42365700

約数和(自身を除く): 24644740

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 27689, 55378, 110756, 138445, 221512, 276890, 443024, 553780, 886048, 1107560, 1772096, 2215120, 3544192, 4430240, 8860480, 17720960]

約数ペア:

[(1, 17720960), (2, 8860480), (4, 4430240), (5, 3544192), (8, 2215120), (10, 1772096), (16, 1107560), (20, 886048), (32, 553780), (40, 443024), (64, 276890), (80, 221512), (128, 138445), (160, 110756), (320, 55378), (640, 27689)]