220120960

素因数分解:

$2^7\times 5^1\times {\mathrm{343939}}^1$

素因数の和:343958

約数の個数: 32

約数和(自身を含む): 526228200

約数和(自身を除く): 306107240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 343939, 687878, 1375756, 1719695, 2751512, 3439390, 5503024, 6878780, 11006048, 13757560, 22012096, 27515120, 44024192, 55030240, 110060480, 220120960]

約数ペア:

[(1, 220120960), (2, 110060480), (4, 55030240), (5, 44024192), (8, 27515120), (10, 22012096), (16, 13757560), (20, 11006048), (32, 6878780), (40, 5503024), (64, 3439390), (80, 2751512), (128, 1719695), (160, 1375756), (320, 687878), (640, 343939)]