20799960

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{139}}^1$

素因数の和:225

約数の個数: 128

約数和(自身を含む): 66528000

約数和(自身を除く): 45728040

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 29, 30, 40, 43, 58, 60, 86, 87, 116, 120, 129, 139, 145, 172, 174, 215, 232, 258, 278, 290, 344, 348, 417, 430, 435, 516, 556, 580, 645, 695, 696, 834, 860, 870, 1032, 1112, 1160, 1247, 1290, 1390, 1668, 1720, 1740, 2085, 2494, 2580, 2780, 3336, 3480, 3741, 4031, 4170, 4988, 5160, 5560, 5977, 6235, 7482, 8062, 8340, 9976, 11954, 12093, 12470, 14964, 16124, 16680, 17931, 18705, 20155, 23908, 24186, 24940, 29885, 29928, 32248, 35862, 37410, 40310, 47816, 48372, 49880, 59770, 60465, 71724, 74820, 80620, 89655, 96744, 119540, 120930, 143448, 149640, 161240, 173333, 179310, 239080, 241860, 346666, 358620, 483720, 519999, 693332, 717240, 866665, 1039998, 1386664, 1733330, 2079996, 2599995, 3466660, 4159992, 5199990, 6933320, 10399980, 20799960]

約数ペア:

[(1, 20799960), (2, 10399980), (3, 6933320), (4, 5199990), (5, 4159992), (6, 3466660), (8, 2599995), (10, 2079996), (12, 1733330), (15, 1386664), (20, 1039998), (24, 866665), (29, 717240), (30, 693332), (40, 519999), (43, 483720), (58, 358620), (60, 346666), (86, 241860), (87, 239080), (116, 179310), (120, 173333), (129, 161240), (139, 149640), (145, 143448), (172, 120930), (174, 119540), (215, 96744), (232, 89655), (258, 80620), (278, 74820), (290, 71724), (344, 60465), (348, 59770), (417, 49880), (430, 48372), (435, 47816), (516, 40310), (556, 37410), (580, 35862), (645, 32248), (695, 29928), (696, 29885), (834, 24940), (860, 24186), (870, 23908), (1032, 20155), (1112, 18705), (1160, 17931), (1247, 16680), (1290, 16124), (1390, 14964), (1668, 12470), (1720, 12093), (1740, 11954), (2085, 9976), (2494, 8340), (2580, 8062), (2780, 7482), (3336, 6235), (3480, 5977), (3741, 5560), (4031, 5160), (4170, 4988)]