20486115

素因数分解:

$3^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1297}}^1$

素因数の和:1330

約数の個数: 48

約数和(自身を含む): 39687648

約数和(自身を除く): 19201533

約数列:

[1, 3, 5, 9, 13, 15, 27, 39, 45, 65, 81, 117, 135, 195, 243, 351, 405, 585, 1053, 1215, 1297, 1755, 3159, 3891, 5265, 6485, 11673, 15795, 16861, 19455, 35019, 50583, 58365, 84305, 105057, 151749, 175095, 252915, 315171, 455247, 525285, 758745, 1365741, 1575855, 2276235, 4097223, 6828705, 20486115]

約数ペア:

[(1, 20486115), (3, 6828705), (5, 4097223), (9, 2276235), (13, 1575855), (15, 1365741), (27, 758745), (39, 525285), (45, 455247), (65, 315171), (81, 252915), (117, 175095), (135, 151749), (195, 105057), (243, 84305), (351, 58365), (405, 50583), (585, 35019), (1053, 19455), (1215, 16861), (1297, 15795), (1755, 11673), (3159, 6485), (3891, 5265)]