290780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1$

素因数の和:114

約数の個数: 48

約数和(自身を含む): 731136

約数和(自身を除く): 440356

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 62, 67, 70, 124, 134, 140, 155, 217, 268, 310, 335, 434, 469, 620, 670, 868, 938, 1085, 1340, 1876, 2077, 2170, 2345, 4154, 4340, 4690, 8308, 9380, 10385, 14539, 20770, 29078, 41540, 58156, 72695, 145390, 290780]

約数ペア:

[(1, 290780), (2, 145390), (4, 72695), (5, 58156), (7, 41540), (10, 29078), (14, 20770), (20, 14539), (28, 10385), (31, 9380), (35, 8308), (62, 4690), (67, 4340), (70, 4154), (124, 2345), (134, 2170), (140, 2077), (155, 1876), (217, 1340), (268, 1085), (310, 938), (335, 868), (434, 670), (469, 620)]