780880

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{227}}^1$

素因数の和:283

約数の個数: 40

約数和(自身を含む): 1865952

約数和(自身を除く): 1085072

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 227, 344, 430, 454, 688, 860, 908, 1135, 1720, 1816, 2270, 3440, 3632, 4540, 9080, 9761, 18160, 19522, 39044, 48805, 78088, 97610, 156176, 195220, 390440, 780880]

約数ペア:

[(1, 780880), (2, 390440), (4, 195220), (5, 156176), (8, 97610), (10, 78088), (16, 48805), (20, 39044), (40, 19522), (43, 18160), (80, 9761), (86, 9080), (172, 4540), (215, 3632), (227, 3440), (344, 2270), (430, 1816), (454, 1720), (688, 1135), (860, 908)]