21437220

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{1187}}^1$

素因数の和:1249

約数の個数: 96

約数和(自身を含む): 70253568

約数和(自身を除く): 48816348

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 43, 60, 70, 84, 86, 105, 129, 140, 172, 210, 215, 258, 301, 420, 430, 516, 602, 645, 860, 903, 1187, 1204, 1290, 1505, 1806, 2374, 2580, 3010, 3561, 3612, 4515, 4748, 5935, 6020, 7122, 8309, 9030, 11870, 14244, 16618, 17805, 18060, 23740, 24927, 33236, 35610, 41545, 49854, 51041, 71220, 83090, 99708, 102082, 124635, 153123, 166180, 204164, 249270, 255205, 306246, 357287, 498540, 510410, 612492, 714574, 765615, 1020820, 1071861, 1429148, 1531230, 1786435, 2143722, 3062460, 3572870, 4287444, 5359305, 7145740, 10718610, 21437220]

約数ペア:

[(1, 21437220), (2, 10718610), (3, 7145740), (4, 5359305), (5, 4287444), (6, 3572870), (7, 3062460), (10, 2143722), (12, 1786435), (14, 1531230), (15, 1429148), (20, 1071861), (21, 1020820), (28, 765615), (30, 714574), (35, 612492), (42, 510410), (43, 498540), (60, 357287), (70, 306246), (84, 255205), (86, 249270), (105, 204164), (129, 166180), (140, 153123), (172, 124635), (210, 102082), (215, 99708), (258, 83090), (301, 71220), (420, 51041), (430, 49854), (516, 41545), (602, 35610), (645, 33236), (860, 24927), (903, 23740), (1187, 18060), (1204, 17805), (1290, 16618), (1505, 14244), (1806, 11870), (2374, 9030), (2580, 8309), (3010, 7122), (3561, 6020), (3612, 5935), (4515, 4748)]