21043528

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{281}}^1$

素因数の和:358

約数の個数: 64

約数和(自身を含む): 46293120

約数和(自身を除く): 25249592

約数列:

[1, 2, 4, 8, 11, 22, 23, 37, 44, 46, 74, 88, 92, 148, 184, 253, 281, 296, 407, 506, 562, 814, 851, 1012, 1124, 1628, 1702, 2024, 2248, 3091, 3256, 3404, 6182, 6463, 6808, 9361, 10397, 12364, 12926, 18722, 20794, 24728, 25852, 37444, 41588, 51704, 71093, 74888, 83176, 114367, 142186, 228734, 239131, 284372, 457468, 478262, 568744, 914936, 956524, 1913048, 2630441, 5260882, 10521764, 21043528]

約数ペア:

[(1, 21043528), (2, 10521764), (4, 5260882), (8, 2630441), (11, 1913048), (22, 956524), (23, 914936), (37, 568744), (44, 478262), (46, 457468), (74, 284372), (88, 239131), (92, 228734), (148, 142186), (184, 114367), (253, 83176), (281, 74888), (296, 71093), (407, 51704), (506, 41588), (562, 37444), (814, 25852), (851, 24728), (1012, 20794), (1124, 18722), (1628, 12926), (1702, 12364), (2024, 10397), (2248, 9361), (3091, 6808), (3256, 6463), (3404, 6182)]