728560

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{1301}}^1$

素因数の和:1321

約数の個数: 40

約数和(自身を含む): 1937376

約数和(自身を除く): 1208816

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 1301, 2602, 5204, 6505, 9107, 10408, 13010, 18214, 20816, 26020, 36428, 45535, 52040, 72856, 91070, 104080, 145712, 182140, 364280, 728560]

約数ペア:

[(1, 728560), (2, 364280), (4, 182140), (5, 145712), (7, 104080), (8, 91070), (10, 72856), (14, 52040), (16, 45535), (20, 36428), (28, 26020), (35, 20816), (40, 18214), (56, 13010), (70, 10408), (80, 9107), (112, 6505), (140, 5204), (280, 2602), (560, 1301)]