21018160920

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{4073287}}^1$

素因数の和:4073344

約数の個数: 64

約数和(自身を含む): 64520881920

約数和(自身を除く): 43502721000

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 43, 60, 86, 120, 129, 172, 215, 258, 344, 430, 516, 645, 860, 1032, 1290, 1720, 2580, 5160, 4073287, 8146574, 12219861, 16293148, 20366435, 24439722, 32586296, 40732870, 48879444, 61099305, 81465740, 97758888, 122198610, 162931480, 175151341, 244397220, 350302682, 488794440, 525454023, 700605364, 875756705, 1050908046, 1401210728, 1751513410, 2101816092, 2627270115, 3503026820, 4203632184, 5254540230, 7006053640, 10509080460, 21018160920]

約数ペア:

[(1, 21018160920), (2, 10509080460), (3, 7006053640), (4, 5254540230), (5, 4203632184), (6, 3503026820), (8, 2627270115), (10, 2101816092), (12, 1751513410), (15, 1401210728), (20, 1050908046), (24, 875756705), (30, 700605364), (40, 525454023), (43, 488794440), (60, 350302682), (86, 244397220), (120, 175151341), (129, 162931480), (172, 122198610), (215, 97758888), (258, 81465740), (344, 61099305), (430, 48879444), (516, 40732870), (645, 32586296), (860, 24439722), (1032, 20366435), (1290, 16293148), (1720, 12219861), (2580, 8146574), (5160, 4073287)]