2561720

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{1307}}^1$

素因数の和:1332

約数の個数: 48

約数和(自身を含む): 6710040

約数和(自身を除く): 4148320

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1307, 1960, 2614, 5228, 6535, 9149, 10456, 13070, 18298, 26140, 36596, 45745, 52280, 64043, 73192, 91490, 128086, 182980, 256172, 320215, 365960, 512344, 640430, 1280860, 2561720]

約数ペア:

[(1, 2561720), (2, 1280860), (4, 640430), (5, 512344), (7, 365960), (8, 320215), (10, 256172), (14, 182980), (20, 128086), (28, 91490), (35, 73192), (40, 64043), (49, 52280), (56, 45745), (70, 36596), (98, 26140), (140, 18298), (196, 13070), (245, 10456), (280, 9149), (392, 6535), (490, 5228), (980, 2614), (1307, 1960)]