19966760

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{1973}}^1$

素因数の和:2018

約数の個数: 64

約数和(自身を含む): 51166080

約数和(自身を除く): 31199320

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 23, 40, 44, 46, 55, 88, 92, 110, 115, 184, 220, 230, 253, 440, 460, 506, 920, 1012, 1265, 1973, 2024, 2530, 3946, 5060, 7892, 9865, 10120, 15784, 19730, 21703, 39460, 43406, 45379, 78920, 86812, 90758, 108515, 173624, 181516, 217030, 226895, 363032, 434060, 453790, 499169, 868120, 907580, 998338, 1815160, 1996676, 2495845, 3993352, 4991690, 9983380, 19966760]

約数ペア:

[(1, 19966760), (2, 9983380), (4, 4991690), (5, 3993352), (8, 2495845), (10, 1996676), (11, 1815160), (20, 998338), (22, 907580), (23, 868120), (40, 499169), (44, 453790), (46, 434060), (55, 363032), (88, 226895), (92, 217030), (110, 181516), (115, 173624), (184, 108515), (220, 90758), (230, 86812), (253, 78920), (440, 45379), (460, 43406), (506, 39460), (920, 21703), (1012, 19730), (1265, 15784), (1973, 10120), (2024, 9865), (2530, 7892), (3946, 5060)]