21025980

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{12979}}^1$

素因数の和:13000

約数の個数: 60

約数和(自身を含む): 65964360

約数和(自身を除く): 44938380

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 81, 90, 108, 135, 162, 180, 270, 324, 405, 540, 810, 1620, 12979, 25958, 38937, 51916, 64895, 77874, 116811, 129790, 155748, 194685, 233622, 259580, 350433, 389370, 467244, 584055, 700866, 778740, 1051299, 1168110, 1401732, 1752165, 2102598, 2336220, 3504330, 4205196, 5256495, 7008660, 10512990, 21025980]

約数ペア:

[(1, 21025980), (2, 10512990), (3, 7008660), (4, 5256495), (5, 4205196), (6, 3504330), (9, 2336220), (10, 2102598), (12, 1752165), (15, 1401732), (18, 1168110), (20, 1051299), (27, 778740), (30, 700866), (36, 584055), (45, 467244), (54, 389370), (60, 350433), (81, 259580), (90, 233622), (108, 194685), (135, 155748), (162, 129790), (180, 116811), (270, 77874), (324, 64895), (405, 51916), (540, 38937), (810, 25958), (1620, 12979)]