78582520

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{127}}^1\times {\mathrm{499}}^1$

素因数の和:668

約数の個数: 64

約数和(自身を含む): 184320000

約数和(自身を除く): 105737480

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 127, 155, 248, 254, 310, 499, 508, 620, 635, 998, 1016, 1240, 1270, 1996, 2495, 2540, 3937, 3992, 4990, 5080, 7874, 9980, 15469, 15748, 19685, 19960, 30938, 31496, 39370, 61876, 63373, 77345, 78740, 123752, 126746, 154690, 157480, 253492, 309380, 316865, 506984, 618760, 633730, 1267460, 1964563, 2534920, 3929126, 7858252, 9822815, 15716504, 19645630, 39291260, 78582520]

約数ペア:

[(1, 78582520), (2, 39291260), (4, 19645630), (5, 15716504), (8, 9822815), (10, 7858252), (20, 3929126), (31, 2534920), (40, 1964563), (62, 1267460), (124, 633730), (127, 618760), (155, 506984), (248, 316865), (254, 309380), (310, 253492), (499, 157480), (508, 154690), (620, 126746), (635, 123752), (998, 78740), (1016, 77345), (1240, 63373), (1270, 61876), (1996, 39370), (2495, 31496), (2540, 30938), (3937, 19960), (3992, 19685), (4990, 15748), (5080, 15469), (7874, 9980)]