278228580

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{662449}}^1$

素因数の和:662468

約数の個数: 48

約数和(自身を含む): 890332800

約数和(自身を除く): 612104220

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 662449, 1324898, 1987347, 2649796, 3312245, 3974694, 4637143, 6624490, 7949388, 9274286, 9936735, 13248980, 13911429, 18548572, 19873470, 23185715, 27822858, 39746940, 46371430, 55645716, 69557145, 92742860, 139114290, 278228580]

約数ペア:

[(1, 278228580), (2, 139114290), (3, 92742860), (4, 69557145), (5, 55645716), (6, 46371430), (7, 39746940), (10, 27822858), (12, 23185715), (14, 19873470), (15, 18548572), (20, 13911429), (21, 13248980), (28, 9936735), (30, 9274286), (35, 7949388), (42, 6624490), (60, 4637143), (70, 3974694), (84, 3312245), (105, 2649796), (140, 1987347), (210, 1324898), (420, 662449)]