1900220

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{277}}^1$

素因数の和:307

約数の個数: 48

約数和(自身を含む): 4670400

約数和(自身を除く): 2770180

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 277, 343, 490, 554, 686, 980, 1108, 1372, 1385, 1715, 1939, 2770, 3430, 3878, 5540, 6860, 7756, 9695, 13573, 19390, 27146, 38780, 54292, 67865, 95011, 135730, 190022, 271460, 380044, 475055, 950110, 1900220]

約数ペア:

[(1, 1900220), (2, 950110), (4, 475055), (5, 380044), (7, 271460), (10, 190022), (14, 135730), (20, 95011), (28, 67865), (35, 54292), (49, 38780), (70, 27146), (98, 19390), (140, 13573), (196, 9695), (245, 7756), (277, 6860), (343, 5540), (490, 3878), (554, 3430), (686, 2770), (980, 1939), (1108, 1715), (1372, 1385)]