20512954920

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{251}}^1\times {\mathrm{681041}}^1$

素因数の和:681306

約数の個数: 64

約数和(自身を含む): 61784130240

約数和(自身を除く): 41271175320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 251, 502, 753, 1004, 1255, 1506, 2008, 2510, 3012, 3765, 5020, 6024, 7530, 10040, 15060, 30120, 681041, 1362082, 2043123, 2724164, 3405205, 4086246, 5448328, 6810410, 8172492, 10215615, 13620820, 16344984, 20431230, 27241640, 40862460, 81724920, 170941291, 341882582, 512823873, 683765164, 854706455, 1025647746, 1367530328, 1709412910, 2051295492, 2564119365, 3418825820, 4102590984, 5128238730, 6837651640, 10256477460, 20512954920]

約数ペア:

[(1, 20512954920), (2, 10256477460), (3, 6837651640), (4, 5128238730), (5, 4102590984), (6, 3418825820), (8, 2564119365), (10, 2051295492), (12, 1709412910), (15, 1367530328), (20, 1025647746), (24, 854706455), (30, 683765164), (40, 512823873), (60, 341882582), (120, 170941291), (251, 81724920), (502, 40862460), (753, 27241640), (1004, 20431230), (1255, 16344984), (1506, 13620820), (2008, 10215615), (2510, 8172492), (3012, 6810410), (3765, 5448328), (5020, 4086246), (6024, 3405205), (7530, 2724164), (10040, 2043123), (15060, 1362082), (30120, 681041)]