21526965

素因数分解:

$3^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{2311}}^1$

素因数の和:2351

約数の個数: 40

約数和(自身を含む): 40284288

約数和(自身を除く): 18757323

約数列:

[1, 3, 5, 9, 15, 23, 27, 45, 69, 81, 115, 135, 207, 345, 405, 621, 1035, 1863, 2311, 3105, 6933, 9315, 11555, 20799, 34665, 53153, 62397, 103995, 159459, 187191, 265765, 311985, 478377, 797295, 935955, 1435131, 2391885, 4305393, 7175655, 21526965]

約数ペア:

[(1, 21526965), (3, 7175655), (5, 4305393), (9, 2391885), (15, 1435131), (23, 935955), (27, 797295), (45, 478377), (69, 311985), (81, 265765), (115, 187191), (135, 159459), (207, 103995), (345, 62397), (405, 53153), (621, 34665), (1035, 20799), (1863, 11555), (2311, 9315), (3105, 6933)]