21811860

素因数分解:

$2^2\times 3^2\times 5^1\times 7^2\times {\mathrm{2473}}^1$

素因数の和:2502

約数の個数: 108

約数和(自身を含む): 76995828

約数和(自身を除く): 55183968

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 49, 60, 63, 70, 84, 90, 98, 105, 126, 140, 147, 180, 196, 210, 245, 252, 294, 315, 420, 441, 490, 588, 630, 735, 882, 980, 1260, 1470, 1764, 2205, 2473, 2940, 4410, 4946, 7419, 8820, 9892, 12365, 14838, 17311, 22257, 24730, 29676, 34622, 37095, 44514, 49460, 51933, 69244, 74190, 86555, 89028, 103866, 111285, 121177, 148380, 155799, 173110, 207732, 222570, 242354, 259665, 311598, 346220, 363531, 445140, 484708, 519330, 605885, 623196, 727062, 778995, 1038660, 1090593, 1211770, 1454124, 1557990, 1817655, 2181186, 2423540, 3115980, 3635310, 4362372, 5452965, 7270620, 10905930, 21811860]

約数ペア:

[(1, 21811860), (2, 10905930), (3, 7270620), (4, 5452965), (5, 4362372), (6, 3635310), (7, 3115980), (9, 2423540), (10, 2181186), (12, 1817655), (14, 1557990), (15, 1454124), (18, 1211770), (20, 1090593), (21, 1038660), (28, 778995), (30, 727062), (35, 623196), (36, 605885), (42, 519330), (45, 484708), (49, 445140), (60, 363531), (63, 346220), (70, 311598), (84, 259665), (90, 242354), (98, 222570), (105, 207732), (126, 173110), (140, 155799), (147, 148380), (180, 121177), (196, 111285), (210, 103866), (245, 89028), (252, 86555), (294, 74190), (315, 69244), (420, 51933), (441, 49460), (490, 44514), (588, 37095), (630, 34622), (735, 29676), (882, 24730), (980, 22257), (1260, 17311), (1470, 14838), (1764, 12365), (2205, 9892), (2473, 8820), (2940, 7419), (4410, 4946)]