28430780

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{67}}^1\times {\mathrm{433}}^1$

素因数の和:523

約数の個数: 72

約数和(自身を含む): 70651728

約数和(自身を除く): 42220948

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 67, 70, 98, 134, 140, 196, 245, 268, 335, 433, 469, 490, 670, 866, 938, 980, 1340, 1732, 1876, 2165, 2345, 3031, 3283, 4330, 4690, 6062, 6566, 8660, 9380, 12124, 13132, 15155, 16415, 21217, 29011, 30310, 32830, 42434, 58022, 60620, 65660, 84868, 106085, 116044, 145055, 203077, 212170, 290110, 406154, 424340, 580220, 812308, 1015385, 1421539, 2030770, 2843078, 4061540, 5686156, 7107695, 14215390, 28430780]

約数ペア:

[(1, 28430780), (2, 14215390), (4, 7107695), (5, 5686156), (7, 4061540), (10, 2843078), (14, 2030770), (20, 1421539), (28, 1015385), (35, 812308), (49, 580220), (67, 424340), (70, 406154), (98, 290110), (134, 212170), (140, 203077), (196, 145055), (245, 116044), (268, 106085), (335, 84868), (433, 65660), (469, 60620), (490, 58022), (670, 42434), (866, 32830), (938, 30310), (980, 29011), (1340, 21217), (1732, 16415), (1876, 15155), (2165, 13132), (2345, 12124), (3031, 9380), (3283, 8660), (4330, 6566), (4690, 6062)]