1921957821

素因数分解:

$3^3\times 7^2\times {\mathrm{1452727}}^1$

素因数の和:1452750

約数の個数: 24

約数和(自身を含む): 3312219840

約数和(自身を除く): 1390262019

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 147, 189, 441, 1323, 1452727, 4358181, 10169089, 13074543, 30507267, 39223629, 71183623, 91521801, 213550869, 274565403, 640652607, 1921957821]

約数ペア:

[(1, 1921957821), (3, 640652607), (7, 274565403), (9, 213550869), (21, 91521801), (27, 71183623), (49, 39223629), (63, 30507267), (147, 13074543), (189, 10169089), (441, 4358181), (1323, 1452727)]