21620848

素因数分解:

$2^4\times {\mathrm{73}}^1\times {\mathrm{107}}^1\times {\mathrm{173}}^1$

素因数の和:361

約数の個数: 40

約数和(自身を含む): 43108848

約数和(自身を除く): 21488000

約数列:

[1, 2, 4, 8, 16, 73, 107, 146, 173, 214, 292, 346, 428, 584, 692, 856, 1168, 1384, 1712, 2768, 7811, 12629, 15622, 18511, 25258, 31244, 37022, 50516, 62488, 74044, 101032, 124976, 148088, 202064, 296176, 1351303, 2702606, 5405212, 10810424, 21620848]

約数ペア:

[(1, 21620848), (2, 10810424), (4, 5405212), (8, 2702606), (16, 1351303), (73, 296176), (107, 202064), (146, 148088), (173, 124976), (214, 101032), (292, 74044), (346, 62488), (428, 50516), (584, 37022), (692, 31244), (856, 25258), (1168, 18511), (1384, 15622), (1712, 12629), (2768, 7811)]