21145760

素因数分解:

$2^5\times 5^1\times {\mathrm{283}}^1\times {\mathrm{467}}^1$

素因数の和:765

約数の個数: 48

約数和(自身を含む): 50240736

約数和(自身を除く): 29094976

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 283, 467, 566, 934, 1132, 1415, 1868, 2264, 2335, 2830, 3736, 4528, 4670, 5660, 7472, 9056, 9340, 11320, 14944, 18680, 22640, 37360, 45280, 74720, 132161, 264322, 528644, 660805, 1057288, 1321610, 2114576, 2643220, 4229152, 5286440, 10572880, 21145760]

約数ペア:

[(1, 21145760), (2, 10572880), (4, 5286440), (5, 4229152), (8, 2643220), (10, 2114576), (16, 1321610), (20, 1057288), (32, 660805), (40, 528644), (80, 264322), (160, 132161), (283, 74720), (467, 45280), (566, 37360), (934, 22640), (1132, 18680), (1415, 14944), (1868, 11320), (2264, 9340), (2335, 9056), (2830, 7472), (3736, 5660), (4528, 4670)]