81465400

素因数分解:

$2^3\times 5^2\times {\mathrm{71}}^1\times {\mathrm{5737}}^1$

素因数の和:5824

約数の個数: 48

約数和(自身を含む): 192108240

約数和(自身を除く): 110642840

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 71, 100, 142, 200, 284, 355, 568, 710, 1420, 1775, 2840, 3550, 5737, 7100, 11474, 14200, 22948, 28685, 45896, 57370, 114740, 143425, 229480, 286850, 407327, 573700, 814654, 1147400, 1629308, 2036635, 3258616, 4073270, 8146540, 10183175, 16293080, 20366350, 40732700, 81465400]

約数ペア:

[(1, 81465400), (2, 40732700), (4, 20366350), (5, 16293080), (8, 10183175), (10, 8146540), (20, 4073270), (25, 3258616), (40, 2036635), (50, 1629308), (71, 1147400), (100, 814654), (142, 573700), (200, 407327), (284, 286850), (355, 229480), (568, 143425), (710, 114740), (1420, 57370), (1775, 45896), (2840, 28685), (3550, 22948), (5737, 14200), (7100, 11474)]