17987193

素因数分解:

$3^2\times 7^1\times {\mathrm{53}}^1\times {\mathrm{5387}}^1$

素因数の和:5453

約数の個数: 24

約数和(自身を含む): 30259008

約数和(自身を除く): 12271815

約数列:

[1, 3, 7, 9, 21, 53, 63, 159, 371, 477, 1113, 3339, 5387, 16161, 37709, 48483, 113127, 285511, 339381, 856533, 1998577, 2569599, 5995731, 17987193]

約数ペア:

[(1, 17987193), (3, 5995731), (7, 2569599), (9, 1998577), (21, 856533), (53, 339381), (63, 285511), (159, 113127), (371, 48483), (477, 37709), (1113, 16161), (3339, 5387)]