21280080

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{88667}}^1$

素因数の和:88683

約数の個数: 40

約数和(自身を含む): 65968992

約数和(自身を除く): 44688912

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 88667, 177334, 266001, 354668, 443335, 532002, 709336, 886670, 1064004, 1330005, 1418672, 1773340, 2128008, 2660010, 3546680, 4256016, 5320020, 7093360, 10640040, 21280080]

約数ペア:

[(1, 21280080), (2, 10640040), (3, 7093360), (4, 5320020), (5, 4256016), (6, 3546680), (8, 2660010), (10, 2128008), (12, 1773340), (15, 1418672), (16, 1330005), (20, 1064004), (24, 886670), (30, 709336), (40, 532002), (48, 443335), (60, 354668), (80, 266001), (120, 177334), (240, 88667)]