16921971

素因数分解:

$3^2\times {\mathrm{11}}^2\times {\mathrm{41}}^1\times {\mathrm{379}}^1$

素因数の和:448

約数の個数: 36

約数和(自身を含む): 27594840

約数和(自身を除く): 10672869

約数列:

[1, 3, 9, 11, 33, 41, 99, 121, 123, 363, 369, 379, 451, 1089, 1137, 1353, 3411, 4059, 4169, 4961, 12507, 14883, 15539, 37521, 44649, 45859, 46617, 137577, 139851, 170929, 412731, 512787, 1538361, 1880219, 5640657, 16921971]

約数ペア:

[(1, 16921971), (3, 5640657), (9, 1880219), (11, 1538361), (33, 512787), (41, 412731), (99, 170929), (121, 139851), (123, 137577), (363, 46617), (369, 45859), (379, 44649), (451, 37521), (1089, 15539), (1137, 14883), (1353, 12507), (3411, 4961), (4059, 4169)]