21108120

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{15991}}^1$

素因数の和:16016

約数の個数: 64

約数和(自身を含む): 69085440

約数和(自身を除く): 47977320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 20, 22, 24, 30, 33, 40, 44, 55, 60, 66, 88, 110, 120, 132, 165, 220, 264, 330, 440, 660, 1320, 15991, 31982, 47973, 63964, 79955, 95946, 127928, 159910, 175901, 191892, 239865, 319820, 351802, 383784, 479730, 527703, 639640, 703604, 879505, 959460, 1055406, 1407208, 1759010, 1918920, 2110812, 2638515, 3518020, 4221624, 5277030, 7036040, 10554060, 21108120]

約数ペア:

[(1, 21108120), (2, 10554060), (3, 7036040), (4, 5277030), (5, 4221624), (6, 3518020), (8, 2638515), (10, 2110812), (11, 1918920), (12, 1759010), (15, 1407208), (20, 1055406), (22, 959460), (24, 879505), (30, 703604), (33, 639640), (40, 527703), (44, 479730), (55, 383784), (60, 351802), (66, 319820), (88, 239865), (110, 191892), (120, 175901), (132, 159910), (165, 127928), (220, 95946), (264, 79955), (330, 63964), (440, 47973), (660, 31982), (1320, 15991)]