21241980

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{283}}^1$

素因数の和:440

約数の個数: 96

約数和(自身を含む): 66796800

約数和(自身を除く): 45554820

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 90, 108, 135, 139, 180, 270, 278, 283, 417, 540, 556, 566, 695, 834, 849, 1132, 1251, 1390, 1415, 1668, 1698, 2085, 2502, 2547, 2780, 2830, 3396, 3753, 4170, 4245, 5004, 5094, 5660, 6255, 7506, 7641, 8340, 8490, 10188, 12510, 12735, 15012, 15282, 16980, 18765, 25020, 25470, 30564, 37530, 38205, 39337, 50940, 75060, 76410, 78674, 118011, 152820, 157348, 196685, 236022, 354033, 393370, 472044, 590055, 708066, 786740, 1062099, 1180110, 1416132, 1770165, 2124198, 2360220, 3540330, 4248396, 5310495, 7080660, 10620990, 21241980]

約数ペア:

[(1, 21241980), (2, 10620990), (3, 7080660), (4, 5310495), (5, 4248396), (6, 3540330), (9, 2360220), (10, 2124198), (12, 1770165), (15, 1416132), (18, 1180110), (20, 1062099), (27, 786740), (30, 708066), (36, 590055), (45, 472044), (54, 393370), (60, 354033), (90, 236022), (108, 196685), (135, 157348), (139, 152820), (180, 118011), (270, 78674), (278, 76410), (283, 75060), (417, 50940), (540, 39337), (556, 38205), (566, 37530), (695, 30564), (834, 25470), (849, 25020), (1132, 18765), (1251, 16980), (1390, 15282), (1415, 15012), (1668, 12735), (1698, 12510), (2085, 10188), (2502, 8490), (2547, 8340), (2780, 7641), (2830, 7506), (3396, 6255), (3753, 5660), (4170, 5094), (4245, 5004)]