21812625

素因数分解:

$3^3\times 5^3\times {\mathrm{23}}^1\times {\mathrm{281}}^1$

素因数の和:328

約数の個数: 64

約数和(自身を含む): 42232320

約数和(自身を除く): 20419695

約数列:

[1, 3, 5, 9, 15, 23, 25, 27, 45, 69, 75, 115, 125, 135, 207, 225, 281, 345, 375, 575, 621, 675, 843, 1035, 1125, 1405, 1725, 2529, 2875, 3105, 3375, 4215, 5175, 6463, 7025, 7587, 8625, 12645, 15525, 19389, 21075, 25875, 32315, 35125, 37935, 58167, 63225, 77625, 96945, 105375, 161575, 174501, 189675, 290835, 316125, 484725, 807875, 872505, 948375, 1454175, 2423625, 4362525, 7270875, 21812625]

約数ペア:

[(1, 21812625), (3, 7270875), (5, 4362525), (9, 2423625), (15, 1454175), (23, 948375), (25, 872505), (27, 807875), (45, 484725), (69, 316125), (75, 290835), (115, 189675), (125, 174501), (135, 161575), (207, 105375), (225, 96945), (281, 77625), (345, 63225), (375, 58167), (575, 37935), (621, 35125), (675, 32315), (843, 25875), (1035, 21075), (1125, 19389), (1405, 15525), (1725, 12645), (2529, 8625), (2875, 7587), (3105, 7025), (3375, 6463), (4215, 5175)]