1981791

素因数分解:

$3^2\times 7^1\times {\mathrm{83}}^1\times {\mathrm{379}}^1$

素因数の和:475

約数の個数: 24

約数和(自身を含む): 3319680

約数和(自身を除く): 1337889

約数列:

[1, 3, 7, 9, 21, 63, 83, 249, 379, 581, 747, 1137, 1743, 2653, 3411, 5229, 7959, 23877, 31457, 94371, 220199, 283113, 660597, 1981791]

約数ペア:

[(1, 1981791), (3, 660597), (7, 283113), (9, 220199), (21, 94371), (63, 31457), (83, 23877), (249, 7959), (379, 5229), (581, 3411), (747, 2653), (1137, 1743)]