21961560

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{197}}^1\times {\mathrm{929}}^1$

素因数の和:1140

約数の個数: 64

約数和(自身を含む): 66290400

約数和(自身を除く): 44328840

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 197, 394, 591, 788, 929, 985, 1182, 1576, 1858, 1970, 2364, 2787, 2955, 3716, 3940, 4645, 4728, 5574, 5910, 7432, 7880, 9290, 11148, 11820, 13935, 18580, 22296, 23640, 27870, 37160, 55740, 111480, 183013, 366026, 549039, 732052, 915065, 1098078, 1464104, 1830130, 2196156, 2745195, 3660260, 4392312, 5490390, 7320520, 10980780, 21961560]

約数ペア:

[(1, 21961560), (2, 10980780), (3, 7320520), (4, 5490390), (5, 4392312), (6, 3660260), (8, 2745195), (10, 2196156), (12, 1830130), (15, 1464104), (20, 1098078), (24, 915065), (30, 732052), (40, 549039), (60, 366026), (120, 183013), (197, 111480), (394, 55740), (591, 37160), (788, 27870), (929, 23640), (985, 22296), (1182, 18580), (1576, 13935), (1858, 11820), (1970, 11148), (2364, 9290), (2787, 7880), (2955, 7432), (3716, 5910), (3940, 5574), (4645, 4728)]