278950980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^3\times {\mathrm{499}}^1$

素因数の和:551

約数の個数: 192

約数和(自身を含む): 983808000

約数和(自身を除く): 704857020

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 11, 12, 14, 15, 20, 21, 22, 28, 30, 33, 35, 42, 44, 55, 60, 66, 70, 77, 84, 105, 110, 121, 132, 140, 154, 165, 210, 220, 231, 242, 308, 330, 363, 385, 420, 462, 484, 499, 605, 660, 726, 770, 847, 924, 998, 1155, 1210, 1331, 1452, 1497, 1540, 1694, 1815, 1996, 2310, 2420, 2495, 2541, 2662, 2994, 3388, 3493, 3630, 3993, 4235, 4620, 4990, 5082, 5324, 5489, 5988, 6655, 6986, 7260, 7485, 7986, 8470, 9317, 9980, 10164, 10479, 10978, 12705, 13310, 13972, 14970, 15972, 16467, 16940, 17465, 18634, 19965, 20958, 21956, 25410, 26620, 27445, 27951, 29940, 32934, 34930, 37268, 38423, 39930, 41916, 46585, 50820, 52395, 54890, 55902, 60379, 65868, 69860, 76846, 79860, 82335, 93170, 104790, 109780, 111804, 115269, 120758, 139755, 153692, 164670, 181137, 186340, 192115, 209580, 230538, 241516, 279510, 301895, 329340, 362274, 384230, 422653, 461076, 559020, 576345, 603790, 664169, 724548, 768460, 845306, 905685, 1152690, 1207580, 1267959, 1328338, 1690612, 1811370, 1992507, 2113265, 2305380, 2535918, 2656676, 3320845, 3622740, 3985014, 4226530, 4649183, 5071836, 6339795, 6641690, 7970028, 8453060, 9298366, 9962535, 12679590, 13283380, 13947549, 18596732, 19925070, 23245915, 25359180, 27895098, 39850140, 46491830, 55790196, 69737745, 92983660, 139475490, 278950980]

約数ペア:

[(1, 278950980), (2, 139475490), (3, 92983660), (4, 69737745), (5, 55790196), (6, 46491830), (7, 39850140), (10, 27895098), (11, 25359180), (12, 23245915), (14, 19925070), (15, 18596732), (20, 13947549), (21, 13283380), (22, 12679590), (28, 9962535), (30, 9298366), (33, 8453060), (35, 7970028), (42, 6641690), (44, 6339795), (55, 5071836), (60, 4649183), (66, 4226530), (70, 3985014), (77, 3622740), (84, 3320845), (105, 2656676), (110, 2535918), (121, 2305380), (132, 2113265), (140, 1992507), (154, 1811370), (165, 1690612), (210, 1328338), (220, 1267959), (231, 1207580), (242, 1152690), (308, 905685), (330, 845306), (363, 768460), (385, 724548), (420, 664169), (462, 603790), (484, 576345), (499, 559020), (605, 461076), (660, 422653), (726, 384230), (770, 362274), (847, 329340), (924, 301895), (998, 279510), (1155, 241516), (1210, 230538), (1331, 209580), (1452, 192115), (1497, 186340), (1540, 181137), (1694, 164670), (1815, 153692), (1996, 139755), (2310, 120758), (2420, 115269), (2495, 111804), (2541, 109780), (2662, 104790), (2994, 93170), (3388, 82335), (3493, 79860), (3630, 76846), (3993, 69860), (4235, 65868), (4620, 60379), (4990, 55902), (5082, 54890), (5324, 52395), (5489, 50820), (5988, 46585), (6655, 41916), (6986, 39930), (7260, 38423), (7485, 37268), (7986, 34930), (8470, 32934), (9317, 29940), (9980, 27951), (10164, 27445), (10479, 26620), (10978, 25410), (12705, 21956), (13310, 20958), (13972, 19965), (14970, 18634), (15972, 17465), (16467, 16940)]