21545804

素因数分解:

$2^2\times 7^1\times {\mathrm{73}}^1\times {\mathrm{83}}^1\times {\mathrm{127}}^1$

素因数の和:294

約数の個数: 48

約数和(自身を含む): 44556288

約数和(自身を除く): 23010484

約数列:

[1, 2, 4, 7, 14, 28, 73, 83, 127, 146, 166, 254, 292, 332, 508, 511, 581, 889, 1022, 1162, 1778, 2044, 2324, 3556, 6059, 9271, 10541, 12118, 18542, 21082, 24236, 37084, 42164, 42413, 64897, 73787, 84826, 129794, 147574, 169652, 259588, 295148, 769493, 1538986, 3077972, 5386451, 10772902, 21545804]

約数ペア:

[(1, 21545804), (2, 10772902), (4, 5386451), (7, 3077972), (14, 1538986), (28, 769493), (73, 295148), (83, 259588), (127, 169652), (146, 147574), (166, 129794), (254, 84826), (292, 73787), (332, 64897), (508, 42413), (511, 42164), (581, 37084), (889, 24236), (1022, 21082), (1162, 18542), (1778, 12118), (2044, 10541), (2324, 9271), (3556, 6059)]