80491640

素因数分解:

$2^3\times 5^1\times {\mathrm{131}}^1\times {\mathrm{15361}}^1$

素因数の和:15503

約数の個数: 32

約数和(自身を含む): 182500560

約数和(自身を除く): 102008920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 131, 262, 524, 655, 1048, 1310, 2620, 5240, 15361, 30722, 61444, 76805, 122888, 153610, 307220, 614440, 2012291, 4024582, 8049164, 10061455, 16098328, 20122910, 40245820, 80491640]

約数ペア:

[(1, 80491640), (2, 40245820), (4, 20122910), (5, 16098328), (8, 10061455), (10, 8049164), (20, 4024582), (40, 2012291), (131, 614440), (262, 307220), (524, 153610), (655, 122888), (1048, 76805), (1310, 61444), (2620, 30722), (5240, 15361)]