21205380

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{1741}}^1$

素因数の和:1789

約数の個数: 96

約数和(自身を含む): 70237440

約数和(自身を除く): 49032060

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 29, 30, 35, 42, 58, 60, 70, 84, 87, 105, 116, 140, 145, 174, 203, 210, 290, 348, 406, 420, 435, 580, 609, 812, 870, 1015, 1218, 1740, 1741, 2030, 2436, 3045, 3482, 4060, 5223, 6090, 6964, 8705, 10446, 12180, 12187, 17410, 20892, 24374, 26115, 34820, 36561, 48748, 50489, 52230, 60935, 73122, 100978, 104460, 121870, 146244, 151467, 182805, 201956, 243740, 252445, 302934, 353423, 365610, 504890, 605868, 706846, 731220, 757335, 1009780, 1060269, 1413692, 1514670, 1767115, 2120538, 3029340, 3534230, 4241076, 5301345, 7068460, 10602690, 21205380]

約数ペア:

[(1, 21205380), (2, 10602690), (3, 7068460), (4, 5301345), (5, 4241076), (6, 3534230), (7, 3029340), (10, 2120538), (12, 1767115), (14, 1514670), (15, 1413692), (20, 1060269), (21, 1009780), (28, 757335), (29, 731220), (30, 706846), (35, 605868), (42, 504890), (58, 365610), (60, 353423), (70, 302934), (84, 252445), (87, 243740), (105, 201956), (116, 182805), (140, 151467), (145, 146244), (174, 121870), (203, 104460), (210, 100978), (290, 73122), (348, 60935), (406, 52230), (420, 50489), (435, 48748), (580, 36561), (609, 34820), (812, 26115), (870, 24374), (1015, 20892), (1218, 17410), (1740, 12187), (1741, 12180), (2030, 10446), (2436, 8705), (3045, 6964), (3482, 6090), (4060, 5223)]