642740103

素因数分解:

$3^5\times {\mathrm{61}}^1\times {\mathrm{131}}^1\times {\mathrm{331}}^1$

素因数の和:538

約数の個数: 48

約数和(自身を含む): 989020032

約数和(自身を除く): 346279929

約数列:

[1, 3, 9, 27, 61, 81, 131, 183, 243, 331, 393, 549, 993, 1179, 1647, 2979, 3537, 4941, 7991, 8937, 10611, 14823, 20191, 23973, 26811, 31833, 43361, 60573, 71919, 80433, 130083, 181719, 215757, 390249, 545157, 647271, 1170747, 1635471, 1941813, 2645021, 3512241, 4906413, 7935063, 10536723, 23805189, 71415567, 214246701, 642740103]

約数ペア:

[(1, 642740103), (3, 214246701), (9, 71415567), (27, 23805189), (61, 10536723), (81, 7935063), (131, 4906413), (183, 3512241), (243, 2645021), (331, 1941813), (393, 1635471), (549, 1170747), (993, 647271), (1179, 545157), (1647, 390249), (2979, 215757), (3537, 181719), (4941, 130083), (7991, 80433), (8937, 71919), (10611, 60573), (14823, 43361), (20191, 31833), (23973, 26811)]