21284064

素因数分解:

$2^5\times 3^2\times {\mathrm{263}}^1\times {\mathrm{281}}^1$

素因数の和:560

約数の個数: 72

約数和(自身を含む): 60972912

約数和(自身を除く): 39688848

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 72, 96, 144, 263, 281, 288, 526, 562, 789, 843, 1052, 1124, 1578, 1686, 2104, 2248, 2367, 2529, 3156, 3372, 4208, 4496, 4734, 5058, 6312, 6744, 8416, 8992, 9468, 10116, 12624, 13488, 18936, 20232, 25248, 26976, 37872, 40464, 73903, 75744, 80928, 147806, 221709, 295612, 443418, 591224, 665127, 886836, 1182448, 1330254, 1773672, 2364896, 2660508, 3547344, 5321016, 7094688, 10642032, 21284064]

約数ペア:

[(1, 21284064), (2, 10642032), (3, 7094688), (4, 5321016), (6, 3547344), (8, 2660508), (9, 2364896), (12, 1773672), (16, 1330254), (18, 1182448), (24, 886836), (32, 665127), (36, 591224), (48, 443418), (72, 295612), (96, 221709), (144, 147806), (263, 80928), (281, 75744), (288, 73903), (526, 40464), (562, 37872), (789, 26976), (843, 25248), (1052, 20232), (1124, 18936), (1578, 13488), (1686, 12624), (2104, 10116), (2248, 9468), (2367, 8992), (2529, 8416), (3156, 6744), (3372, 6312), (4208, 5058), (4496, 4734)]