80386520

素因数分解:

$2^3\times 5^1\times {\mathrm{491}}^1\times {\mathrm{4093}}^1$

素因数の和:4595

約数の個数: 32

約数和(自身を含む): 181282320

約数和(自身を除く): 100895800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 491, 982, 1964, 2455, 3928, 4093, 4910, 8186, 9820, 16372, 19640, 20465, 32744, 40930, 81860, 163720, 2009663, 4019326, 8038652, 10048315, 16077304, 20096630, 40193260, 80386520]

約数ペア:

[(1, 80386520), (2, 40193260), (4, 20096630), (5, 16077304), (8, 10048315), (10, 8038652), (20, 4019326), (40, 2009663), (491, 163720), (982, 81860), (1964, 40930), (2455, 32744), (3928, 20465), (4093, 19640), (4910, 16372), (8186, 9820)]