81404687

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{101}}^1\times {\mathrm{521}}^1$

素因数の和:659

約数の個数: 32

約数和(自身を含む): 107339904

約数和(自身を除く): 25935217

約数列:

[1, 7, 13, 17, 91, 101, 119, 221, 521, 707, 1313, 1547, 1717, 3647, 6773, 8857, 9191, 12019, 22321, 47411, 52621, 61999, 115141, 156247, 368347, 684073, 805987, 894557, 4788511, 6261899, 11629241, 81404687]

約数ペア:

[(1, 81404687), (7, 11629241), (13, 6261899), (17, 4788511), (91, 894557), (101, 805987), (119, 684073), (221, 368347), (521, 156247), (707, 115141), (1313, 61999), (1547, 52621), (1717, 47411), (3647, 22321), (6773, 12019), (8857, 9191)]