21750525

素因数分解:

$3^4\times 5^2\times {\mathrm{23}}^1\times {\mathrm{467}}^1$

素因数の和:512

約数の個数: 60

約数和(自身を含む): 42131232

約数和(自身を除く): 20380707

約数列:

[1, 3, 5, 9, 15, 23, 25, 27, 45, 69, 75, 81, 115, 135, 207, 225, 345, 405, 467, 575, 621, 675, 1035, 1401, 1725, 1863, 2025, 2335, 3105, 4203, 5175, 7005, 9315, 10741, 11675, 12609, 15525, 21015, 32223, 35025, 37827, 46575, 53705, 63045, 96669, 105075, 161115, 189135, 268525, 290007, 315225, 483345, 805575, 870021, 945675, 1450035, 2416725, 4350105, 7250175, 21750525]

約数ペア:

[(1, 21750525), (3, 7250175), (5, 4350105), (9, 2416725), (15, 1450035), (23, 945675), (25, 870021), (27, 805575), (45, 483345), (69, 315225), (75, 290007), (81, 268525), (115, 189135), (135, 161115), (207, 105075), (225, 96669), (345, 63045), (405, 53705), (467, 46575), (575, 37827), (621, 35025), (675, 32223), (1035, 21015), (1401, 15525), (1725, 12609), (1863, 11675), (2025, 10741), (2335, 9315), (3105, 7005), (4203, 5175)]