18825885

素因数分解:

$3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{631}}^1$

素因数の和:675

約数の個数: 64

約数和(自身を含む): 38223360

約数和(自身を除く): 19397475

約数列:

[1, 3, 5, 9, 13, 15, 17, 27, 39, 45, 51, 65, 85, 117, 135, 153, 195, 221, 255, 351, 459, 585, 631, 663, 765, 1105, 1755, 1893, 1989, 2295, 3155, 3315, 5679, 5967, 8203, 9465, 9945, 10727, 17037, 24609, 28395, 29835, 32181, 41015, 53635, 73827, 85185, 96543, 123045, 139451, 160905, 221481, 289629, 369135, 418353, 482715, 697255, 1107405, 1255059, 1448145, 2091765, 3765177, 6275295, 18825885]

約数ペア:

[(1, 18825885), (3, 6275295), (5, 3765177), (9, 2091765), (13, 1448145), (15, 1255059), (17, 1107405), (27, 697255), (39, 482715), (45, 418353), (51, 369135), (65, 289629), (85, 221481), (117, 160905), (135, 139451), (153, 123045), (195, 96543), (221, 85185), (255, 73827), (351, 53635), (459, 41015), (585, 32181), (631, 29835), (663, 28395), (765, 24609), (1105, 17037), (1755, 10727), (1893, 9945), (1989, 9465), (2295, 8203), (3155, 5967), (3315, 5679)]