21194816

素因数分解:

$2^6\times {\mathrm{61}}^2\times {\mathrm{89}}^1$

素因数の和:223

約数の個数: 42

約数和(自身を含む): 43239690

約数和(自身を除く): 22044874

約数列:

[1, 2, 4, 8, 16, 32, 61, 64, 89, 122, 178, 244, 356, 488, 712, 976, 1424, 1952, 2848, 3721, 3904, 5429, 5696, 7442, 10858, 14884, 21716, 29768, 43432, 59536, 86864, 119072, 173728, 238144, 331169, 347456, 662338, 1324676, 2649352, 5298704, 10597408, 21194816]

約数ペア:

[(1, 21194816), (2, 10597408), (4, 5298704), (8, 2649352), (16, 1324676), (32, 662338), (61, 347456), (64, 331169), (89, 238144), (122, 173728), (178, 119072), (244, 86864), (356, 59536), (488, 43432), (712, 29768), (976, 21716), (1424, 14884), (1952, 10858), (2848, 7442), (3721, 5696), (3904, 5429)]