19933911

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{137}}^1\times {\mathrm{317}}^1$

素因数の和:480

約数の個数: 32

約数和(自身を含む): 31596480

約数和(自身を除く): 11662569

約数列:

[1, 3, 9, 17, 27, 51, 137, 153, 317, 411, 459, 951, 1233, 2329, 2853, 3699, 5389, 6987, 8559, 16167, 20961, 43429, 48501, 62883, 130287, 145503, 390861, 738293, 1172583, 2214879, 6644637, 19933911]

約数ペア:

[(1, 19933911), (3, 6644637), (9, 2214879), (17, 1172583), (27, 738293), (51, 390861), (137, 145503), (153, 130287), (317, 62883), (411, 48501), (459, 43429), (951, 20961), (1233, 16167), (2329, 8559), (2853, 6987), (3699, 5389)]