20117565

素因数分解:

$3^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{3821}}^1$

素因数の和:3851

約数の個数: 40

約数和(自身を含む): 38846808

約数和(自身を除く): 18729243

約数列:

[1, 3, 5, 9, 13, 15, 27, 39, 45, 65, 81, 117, 135, 195, 351, 405, 585, 1053, 1755, 3821, 5265, 11463, 19105, 34389, 49673, 57315, 103167, 149019, 171945, 248365, 309501, 447057, 515835, 745095, 1341171, 1547505, 2235285, 4023513, 6705855, 20117565]

約数ペア:

[(1, 20117565), (3, 6705855), (5, 4023513), (9, 2235285), (13, 1547505), (15, 1341171), (27, 745095), (39, 515835), (45, 447057), (65, 309501), (81, 248365), (117, 171945), (135, 149019), (195, 103167), (351, 57315), (405, 49673), (585, 34389), (1053, 19105), (1755, 11463), (3821, 5265)]