218368745

素因数分解:

$5^1\times 7^2\times {\mathrm{53}}^1\times {\mathrm{67}}^1\times {\mathrm{251}}^1$

素因数の和:390

約数の個数: 48

約数和(自身を含む): 316467648

約数和(自身を除く): 98098903

約数列:

[1, 5, 7, 35, 49, 53, 67, 245, 251, 265, 335, 371, 469, 1255, 1757, 1855, 2345, 2597, 3283, 3551, 8785, 12299, 12985, 13303, 16415, 16817, 17755, 24857, 61495, 66515, 84085, 93121, 117719, 124285, 173999, 465605, 588595, 651847, 824033, 869995, 891301, 3259235, 4120165, 4456505, 6239107, 31195535, 43673749, 218368745]

約数ペア:

[(1, 218368745), (5, 43673749), (7, 31195535), (35, 6239107), (49, 4456505), (53, 4120165), (67, 3259235), (245, 891301), (251, 869995), (265, 824033), (335, 651847), (371, 588595), (469, 465605), (1255, 173999), (1757, 124285), (1855, 117719), (2345, 93121), (2597, 84085), (3283, 66515), (3551, 61495), (8785, 24857), (12299, 17755), (12985, 16817), (13303, 16415)]