21255712

素因数分解:

$2^5\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{953}}^1$

素因数の和:1021

約数の個数: 48

約数和(自身を含む): 45437112

約数和(自身を除く): 24181400

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 41, 68, 82, 136, 164, 272, 328, 544, 656, 697, 953, 1312, 1394, 1906, 2788, 3812, 5576, 7624, 11152, 15248, 16201, 22304, 30496, 32402, 39073, 64804, 78146, 129608, 156292, 259216, 312584, 518432, 625168, 664241, 1250336, 1328482, 2656964, 5313928, 10627856, 21255712]

約数ペア:

[(1, 21255712), (2, 10627856), (4, 5313928), (8, 2656964), (16, 1328482), (17, 1250336), (32, 664241), (34, 625168), (41, 518432), (68, 312584), (82, 259216), (136, 156292), (164, 129608), (272, 78146), (328, 64804), (544, 39073), (656, 32402), (697, 30496), (953, 22304), (1312, 16201), (1394, 15248), (1906, 11152), (2788, 7624), (3812, 5576)]