31199940

素因数分解:

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

素因数の和:226

約数の個数: 144

約数和(自身を含む): 100900800

約数和(自身を除く): 69700860

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 29, 30, 36, 43, 45, 58, 60, 86, 87, 90, 116, 129, 139, 145, 172, 174, 180, 215, 258, 261, 278, 290, 348, 387, 417, 430, 435, 516, 522, 556, 580, 645, 695, 774, 834, 860, 870, 1044, 1247, 1251, 1290, 1305, 1390, 1548, 1668, 1740, 1935, 2085, 2494, 2502, 2580, 2610, 2780, 3741, 3870, 4031, 4170, 4988, 5004, 5220, 5977, 6235, 6255, 7482, 7740, 8062, 8340, 11223, 11954, 12093, 12470, 12510, 14964, 16124, 17931, 18705, 20155, 22446, 23908, 24186, 24940, 25020, 29885, 35862, 36279, 37410, 40310, 44892, 48372, 53793, 56115, 59770, 60465, 71724, 72558, 74820, 80620, 89655, 107586, 112230, 119540, 120930, 145116, 173333, 179310, 181395, 215172, 224460, 241860, 268965, 346666, 358620, 362790, 519999, 537930, 693332, 725580, 866665, 1039998, 1075860, 1559997, 1733330, 2079996, 2599995, 3119994, 3466660, 5199990, 6239988, 7799985, 10399980, 15599970, 31199940]

約数ペア:

[(1, 31199940), (2, 15599970), (3, 10399980), (4, 7799985), (5, 6239988), (6, 5199990), (9, 3466660), (10, 3119994), (12, 2599995), (15, 2079996), (18, 1733330), (20, 1559997), (29, 1075860), (30, 1039998), (36, 866665), (43, 725580), (45, 693332), (58, 537930), (60, 519999), (86, 362790), (87, 358620), (90, 346666), (116, 268965), (129, 241860), (139, 224460), (145, 215172), (172, 181395), (174, 179310), (180, 173333), (215, 145116), (258, 120930), (261, 119540), (278, 112230), (290, 107586), (348, 89655), (387, 80620), (417, 74820), (430, 72558), (435, 71724), (516, 60465), (522, 59770), (556, 56115), (580, 53793), (645, 48372), (695, 44892), (774, 40310), (834, 37410), (860, 36279), (870, 35862), (1044, 29885), (1247, 25020), (1251, 24940), (1290, 24186), (1305, 23908), (1390, 22446), (1548, 20155), (1668, 18705), (1740, 17931), (1935, 16124), (2085, 14964), (2494, 12510), (2502, 12470), (2580, 12093), (2610, 11954), (2780, 11223), (3741, 8340), (3870, 8062), (4031, 7740), (4170, 7482), (4988, 6255), (5004, 6235), (5220, 5977)]