289410280

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{380803}}^1$

素因数の和:380833

約数の個数: 32

約数和(自身を含む): 685447200

約数和(自身を除く): 396036920

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 380803, 761606, 1523212, 1904015, 3046424, 3808030, 7235257, 7616060, 14470514, 15232120, 28941028, 36176285, 57882056, 72352570, 144705140, 289410280]

約数ペア:

[(1, 289410280), (2, 144705140), (4, 72352570), (5, 57882056), (8, 36176285), (10, 28941028), (19, 15232120), (20, 14470514), (38, 7616060), (40, 7235257), (76, 3808030), (95, 3046424), (152, 1904015), (190, 1523212), (380, 761606), (760, 380803)]