280051660

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{285767}}^1$

素因数の和:285790

約数の個数: 36

約数和(自身を含む): 684128592

約数和(自身を除く): 404076932

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 285767, 571534, 1143068, 1428835, 2000369, 2857670, 4000738, 5715340, 8001476, 10001845, 14002583, 20003690, 28005166, 40007380, 56010332, 70012915, 140025830, 280051660]

約数ペア:

[(1, 280051660), (2, 140025830), (4, 70012915), (5, 56010332), (7, 40007380), (10, 28005166), (14, 20003690), (20, 14002583), (28, 10001845), (35, 8001476), (49, 5715340), (70, 4000738), (98, 2857670), (140, 2000369), (196, 1428835), (245, 1143068), (490, 571534), (980, 285767)]