2225680

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{647}}^1$

素因数の和:703

約数の個数: 40

約数和(自身を含む): 5303232

約数和(自身を除く): 3077552

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 647, 688, 860, 1294, 1720, 2588, 3235, 3440, 5176, 6470, 10352, 12940, 25880, 27821, 51760, 55642, 111284, 139105, 222568, 278210, 445136, 556420, 1112840, 2225680]

約数ペア:

[(1, 2225680), (2, 1112840), (4, 556420), (5, 445136), (8, 278210), (10, 222568), (16, 139105), (20, 111284), (40, 55642), (43, 51760), (80, 27821), (86, 25880), (172, 12940), (215, 10352), (344, 6470), (430, 5176), (647, 3440), (688, 3235), (860, 2588), (1294, 1720)]