1972721331

素因数分解:

$3^3\times 7^2\times {\mathrm{1491097}}^1$

素因数の和:1491120

約数の個数: 24

約数和(自身を含む): 3399703440

約数和(自身を除く): 1426982109

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 147, 189, 441, 1323, 1491097, 4473291, 10437679, 13419873, 31313037, 40259619, 73063753, 93939111, 219191259, 281817333, 657573777, 1972721331]

約数ペア:

[(1, 1972721331), (3, 657573777), (7, 281817333), (9, 219191259), (21, 93939111), (27, 73063753), (49, 40259619), (63, 31313037), (147, 13419873), (189, 10437679), (441, 4473291), (1323, 1491097)]