21042480

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{2039}}^1$

素因数の和:2098

約数の個数: 80

約数和(自身を含む): 66781440

約数和(自身を除く): 45738960

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 43, 48, 60, 80, 86, 120, 129, 172, 215, 240, 258, 344, 430, 516, 645, 688, 860, 1032, 1290, 1720, 2039, 2064, 2580, 3440, 4078, 5160, 6117, 8156, 10195, 10320, 12234, 16312, 20390, 24468, 30585, 32624, 40780, 48936, 61170, 81560, 87677, 97872, 122340, 163120, 175354, 244680, 263031, 350708, 438385, 489360, 526062, 701416, 876770, 1052124, 1315155, 1402832, 1753540, 2104248, 2630310, 3507080, 4208496, 5260620, 7014160, 10521240, 21042480]

約数ペア:

[(1, 21042480), (2, 10521240), (3, 7014160), (4, 5260620), (5, 4208496), (6, 3507080), (8, 2630310), (10, 2104248), (12, 1753540), (15, 1402832), (16, 1315155), (20, 1052124), (24, 876770), (30, 701416), (40, 526062), (43, 489360), (48, 438385), (60, 350708), (80, 263031), (86, 244680), (120, 175354), (129, 163120), (172, 122340), (215, 97872), (240, 87677), (258, 81560), (344, 61170), (430, 48936), (516, 40780), (645, 32624), (688, 30585), (860, 24468), (1032, 20390), (1290, 16312), (1720, 12234), (2039, 10320), (2064, 10195), (2580, 8156), (3440, 6117), (4078, 5160)]