20158515

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{2027}}^1$

素因数の和:2068

約数の個数: 48

約数和(自身を含む): 39862368

約数和(自身を除く): 19703853

約数列:

[1, 3, 5, 9, 13, 15, 17, 39, 45, 51, 65, 85, 117, 153, 195, 221, 255, 585, 663, 765, 1105, 1989, 2027, 3315, 6081, 9945, 10135, 18243, 26351, 30405, 34459, 79053, 91215, 103377, 131755, 172295, 237159, 310131, 395265, 447967, 516885, 1185795, 1343901, 1550655, 2239835, 4031703, 6719505, 20158515]

約数ペア:

[(1, 20158515), (3, 6719505), (5, 4031703), (9, 2239835), (13, 1550655), (15, 1343901), (17, 1185795), (39, 516885), (45, 447967), (51, 395265), (65, 310131), (85, 237159), (117, 172295), (153, 131755), (195, 103377), (221, 91215), (255, 79053), (585, 34459), (663, 30405), (765, 26351), (1105, 18243), (1989, 10135), (2027, 9945), (3315, 6081)]