81401660

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{131293}}^1$

素因数の和:131333

約数の個数: 24

約数和(自身を含む): 176459136

約数和(自身を除く): 95057476

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 131293, 262586, 525172, 656465, 1312930, 2625860, 4070083, 8140166, 16280332, 20350415, 40700830, 81401660]

約数ペア:

[(1, 81401660), (2, 40700830), (4, 20350415), (5, 16280332), (10, 8140166), (20, 4070083), (31, 2625860), (62, 1312930), (124, 656465), (155, 525172), (310, 262586), (620, 131293)]