78857140

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{109}}^1\times {\mathrm{593}}^1$

素因数の和:772

約数の個数: 48

約数和(自身を含む): 170145360

約数和(自身を除く): 91288220

約数列:

[1, 2, 4, 5, 10, 20, 61, 109, 122, 218, 244, 305, 436, 545, 593, 610, 1090, 1186, 1220, 2180, 2372, 2965, 5930, 6649, 11860, 13298, 26596, 33245, 36173, 64637, 66490, 72346, 129274, 132980, 144692, 180865, 258548, 323185, 361730, 646370, 723460, 1292740, 3942857, 7885714, 15771428, 19714285, 39428570, 78857140]

約数ペア:

[(1, 78857140), (2, 39428570), (4, 19714285), (5, 15771428), (10, 7885714), (20, 3942857), (61, 1292740), (109, 723460), (122, 646370), (218, 361730), (244, 323185), (305, 258548), (436, 180865), (545, 144692), (593, 132980), (610, 129274), (1090, 72346), (1186, 66490), (1220, 64637), (2180, 36173), (2372, 33245), (2965, 26596), (5930, 13298), (6649, 11860)]