1280907720

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{154699}}^1$

素因数の和:154739

約数の個数: 96

約数和(自身を含む): 4343976000

約数和(自身を除く): 3063068280

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 23, 24, 30, 36, 40, 45, 46, 60, 69, 72, 90, 92, 115, 120, 138, 180, 184, 207, 230, 276, 345, 360, 414, 460, 552, 690, 828, 920, 1035, 1380, 1656, 2070, 2760, 4140, 8280, 154699, 309398, 464097, 618796, 773495, 928194, 1237592, 1392291, 1546990, 1856388, 2320485, 2784582, 3093980, 3558077, 3712776, 4640970, 5569164, 6187960, 6961455, 7116154, 9281940, 10674231, 11138328, 13922910, 14232308, 17790385, 18563880, 21348462, 27845820, 28464616, 32022693, 35580770, 42696924, 53371155, 55691640, 64045386, 71161540, 85393848, 106742310, 128090772, 142323080, 160113465, 213484620, 256181544, 320226930, 426969240, 640453860, 1280907720]

約数ペア:

[(1, 1280907720), (2, 640453860), (3, 426969240), (4, 320226930), (5, 256181544), (6, 213484620), (8, 160113465), (9, 142323080), (10, 128090772), (12, 106742310), (15, 85393848), (18, 71161540), (20, 64045386), (23, 55691640), (24, 53371155), (30, 42696924), (36, 35580770), (40, 32022693), (45, 28464616), (46, 27845820), (60, 21348462), (69, 18563880), (72, 17790385), (90, 14232308), (92, 13922910), (115, 11138328), (120, 10674231), (138, 9281940), (180, 7116154), (184, 6961455), (207, 6187960), (230, 5569164), (276, 4640970), (345, 3712776), (360, 3558077), (414, 3093980), (460, 2784582), (552, 2320485), (690, 1856388), (828, 1546990), (920, 1392291), (1035, 1237592), (1380, 928194), (1656, 773495), (2070, 618796), (2760, 464097), (4140, 309398), (8280, 154699)]