80302840

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{32911}}^1$

素因数の和:32983

約数の個数: 32

約数和(自身を含む): 183648960

約数和(自身を除く): 103346120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 32911, 65822, 131644, 164555, 263288, 329110, 658220, 1316440, 2007571, 4015142, 8030284, 10037855, 16060568, 20075710, 40151420, 80302840]

約数ペア:

[(1, 80302840), (2, 40151420), (4, 20075710), (5, 16060568), (8, 10037855), (10, 8030284), (20, 4015142), (40, 2007571), (61, 1316440), (122, 658220), (244, 329110), (305, 263288), (488, 164555), (610, 131644), (1220, 65822), (2440, 32911)]