8990940

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{21407}}^1$

素因数の和:21426

約数の個数: 48

約数和(自身を含む): 28772352

約数和(自身を除く): 19781412

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, 21407, 42814, 64221, 85628, 107035, 128442, 149849, 214070, 256884, 299698, 321105, 428140, 449547, 599396, 642210, 749245, 899094, 1284420, 1498490, 1798188, 2247735, 2996980, 4495470, 8990940]

約数ペア:

[(1, 8990940), (2, 4495470), (3, 2996980), (4, 2247735), (5, 1798188), (6, 1498490), (7, 1284420), (10, 899094), (12, 749245), (14, 642210), (15, 599396), (20, 449547), (21, 428140), (28, 321105), (30, 299698), (35, 256884), (42, 214070), (60, 149849), (70, 128442), (84, 107035), (105, 85628), (140, 64221), (210, 42814), (420, 21407)]