21131220

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{317}}^1$

素因数の和:441

約数の個数: 96

約数和(自身を含む): 65390976

約数和(自身を除く): 44259756

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 20, 22, 30, 33, 44, 55, 60, 66, 101, 110, 132, 165, 202, 220, 303, 317, 330, 404, 505, 606, 634, 660, 951, 1010, 1111, 1212, 1268, 1515, 1585, 1902, 2020, 2222, 3030, 3170, 3333, 3487, 3804, 4444, 4755, 5555, 6060, 6340, 6666, 6974, 9510, 10461, 11110, 13332, 13948, 16665, 17435, 19020, 20922, 22220, 32017, 33330, 34870, 41844, 52305, 64034, 66660, 69740, 96051, 104610, 128068, 160085, 192102, 209220, 320170, 352187, 384204, 480255, 640340, 704374, 960510, 1056561, 1408748, 1760935, 1921020, 2113122, 3521870, 4226244, 5282805, 7043740, 10565610, 21131220]

約数ペア:

[(1, 21131220), (2, 10565610), (3, 7043740), (4, 5282805), (5, 4226244), (6, 3521870), (10, 2113122), (11, 1921020), (12, 1760935), (15, 1408748), (20, 1056561), (22, 960510), (30, 704374), (33, 640340), (44, 480255), (55, 384204), (60, 352187), (66, 320170), (101, 209220), (110, 192102), (132, 160085), (165, 128068), (202, 104610), (220, 96051), (303, 69740), (317, 66660), (330, 64034), (404, 52305), (505, 41844), (606, 34870), (634, 33330), (660, 32017), (951, 22220), (1010, 20922), (1111, 19020), (1212, 17435), (1268, 16665), (1515, 13948), (1585, 13332), (1902, 11110), (2020, 10461), (2222, 9510), (3030, 6974), (3170, 6666), (3333, 6340), (3487, 6060), (3804, 5555), (4444, 4755)]