66912920

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{109}}^1\times {\mathrm{149}}^1$

素因数の和:372

約数の個数: 64

約数和(自身を含む): 154440000

約数和(自身を除く): 87527080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 109, 149, 206, 218, 298, 412, 436, 515, 545, 596, 745, 824, 872, 1030, 1090, 1192, 1490, 2060, 2180, 2980, 4120, 4360, 5960, 11227, 15347, 16241, 22454, 30694, 32482, 44908, 56135, 61388, 64964, 76735, 81205, 89816, 112270, 122776, 129928, 153470, 162410, 224540, 306940, 324820, 449080, 613880, 649640, 1672823, 3345646, 6691292, 8364115, 13382584, 16728230, 33456460, 66912920]

約数ペア:

[(1, 66912920), (2, 33456460), (4, 16728230), (5, 13382584), (8, 8364115), (10, 6691292), (20, 3345646), (40, 1672823), (103, 649640), (109, 613880), (149, 449080), (206, 324820), (218, 306940), (298, 224540), (412, 162410), (436, 153470), (515, 129928), (545, 122776), (596, 112270), (745, 89816), (824, 81205), (872, 76735), (1030, 64964), (1090, 61388), (1192, 56135), (1490, 44908), (2060, 32482), (2180, 30694), (2980, 22454), (4120, 16241), (4360, 15347), (5960, 11227)]