2158940

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{2203}}^1$

素因数の和:2226

約数の個数: 36

約数和(自身を含む): 5276376

約数和(自身を除く): 3117436

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 2203, 4406, 8812, 11015, 15421, 22030, 30842, 44060, 61684, 77105, 107947, 154210, 215894, 308420, 431788, 539735, 1079470, 2158940]

約数ペア:

[(1, 2158940), (2, 1079470), (4, 539735), (5, 431788), (7, 308420), (10, 215894), (14, 154210), (20, 107947), (28, 77105), (35, 61684), (49, 44060), (70, 30842), (98, 22030), (140, 15421), (196, 11015), (245, 8812), (490, 4406), (980, 2203)]