21038015280

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{743}}^1\times {\mathrm{117979}}^1$

素因数の和:118738

約数の個数: 80

約数和(自身を含む): 65306177280

約数和(自身を除く): 44268162000

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 743, 1486, 2229, 2972, 3715, 4458, 5944, 7430, 8916, 11145, 11888, 14860, 17832, 22290, 29720, 35664, 44580, 59440, 89160, 117979, 178320, 235958, 353937, 471916, 589895, 707874, 943832, 1179790, 1415748, 1769685, 1887664, 2359580, 2831496, 3539370, 4719160, 5662992, 7078740, 9438320, 14157480, 28314960, 87658397, 175316794, 262975191, 350633588, 438291985, 525950382, 701267176, 876583970, 1051900764, 1314875955, 1402534352, 1753167940, 2103801528, 2629751910, 3506335880, 4207603056, 5259503820, 7012671760, 10519007640, 21038015280]

約数ペア:

[(1, 21038015280), (2, 10519007640), (3, 7012671760), (4, 5259503820), (5, 4207603056), (6, 3506335880), (8, 2629751910), (10, 2103801528), (12, 1753167940), (15, 1402534352), (16, 1314875955), (20, 1051900764), (24, 876583970), (30, 701267176), (40, 525950382), (48, 438291985), (60, 350633588), (80, 262975191), (120, 175316794), (240, 87658397), (743, 28314960), (1486, 14157480), (2229, 9438320), (2972, 7078740), (3715, 5662992), (4458, 4719160), (5944, 3539370), (7430, 2831496), (8916, 2359580), (11145, 1887664), (11888, 1769685), (14860, 1415748), (17832, 1179790), (22290, 943832), (29720, 707874), (35664, 589895), (44580, 471916), (59440, 353937), (89160, 235958), (117979, 178320)]