18639729

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{1699}}^1$

素因数の和:1781

約数の個数: 24

約数和(自身を含む): 28641600

約数和(自身を除く): 10001871

約数列:

[1, 3, 9, 23, 53, 69, 159, 207, 477, 1219, 1699, 3657, 5097, 10971, 15291, 39077, 90047, 117231, 270141, 351693, 810423, 2071081, 6213243, 18639729]

約数ペア:

[(1, 18639729), (3, 6213243), (9, 2071081), (23, 810423), (53, 351693), (69, 270141), (159, 117231), (207, 90047), (477, 39077), (1219, 15291), (1699, 10971), (3657, 5097)]