1290540

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{137}}^1\times {\mathrm{157}}^1$

素因数の和:306

約数の個数: 48

約数和(自身を含む): 3663072

約数和(自身を除く): 2372532

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 137, 157, 274, 314, 411, 471, 548, 628, 685, 785, 822, 942, 1370, 1570, 1644, 1884, 2055, 2355, 2740, 3140, 4110, 4710, 8220, 9420, 21509, 43018, 64527, 86036, 107545, 129054, 215090, 258108, 322635, 430180, 645270, 1290540]

約数ペア:

[(1, 1290540), (2, 645270), (3, 430180), (4, 322635), (5, 258108), (6, 215090), (10, 129054), (12, 107545), (15, 86036), (20, 64527), (30, 43018), (60, 21509), (137, 9420), (157, 8220), (274, 4710), (314, 4110), (411, 3140), (471, 2740), (548, 2355), (628, 2055), (685, 1884), (785, 1644), (822, 1570), (942, 1370)]