388637571

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{347}}^1\times {\mathrm{401}}^1$

素因数の和:784

約数の個数: 48

約数和(自身を含む): 637925760

約数和(自身を除く): 249288189

約数列:

[1, 3, 7, 19, 21, 49, 57, 133, 147, 347, 399, 401, 931, 1041, 1203, 2429, 2793, 2807, 6593, 7287, 7619, 8421, 17003, 19649, 19779, 22857, 46151, 51009, 53333, 58947, 138453, 139147, 159999, 323057, 373331, 417441, 969171, 974029, 1119993, 2643793, 2922087, 6818203, 7931379, 18506551, 20454609, 55519653, 129545857, 388637571]

約数ペア:

[(1, 388637571), (3, 129545857), (7, 55519653), (19, 20454609), (21, 18506551), (49, 7931379), (57, 6818203), (133, 2922087), (147, 2643793), (347, 1119993), (399, 974029), (401, 969171), (931, 417441), (1041, 373331), (1203, 323057), (2429, 159999), (2793, 139147), (2807, 138453), (6593, 58947), (7287, 53333), (7619, 51009), (8421, 46151), (17003, 22857), (19649, 19779)]