20766537

素因数分解:

$3^5\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{457}}^1$

素因数の和:500

約数の個数: 48

約数和(自身を含む): 36009792

約数和(自身を除く): 15243255

約数列:

[1, 3, 9, 11, 17, 27, 33, 51, 81, 99, 153, 187, 243, 297, 457, 459, 561, 891, 1371, 1377, 1683, 2673, 4113, 4131, 5027, 5049, 7769, 12339, 15081, 15147, 23307, 37017, 45243, 45441, 69921, 85459, 111051, 135729, 209763, 256377, 407187, 629289, 769131, 1221561, 1887867, 2307393, 6922179, 20766537]

約数ペア:

[(1, 20766537), (3, 6922179), (9, 2307393), (11, 1887867), (17, 1221561), (27, 769131), (33, 629289), (51, 407187), (81, 256377), (99, 209763), (153, 135729), (187, 111051), (243, 85459), (297, 69921), (457, 45441), (459, 45243), (561, 37017), (891, 23307), (1371, 15147), (1377, 15081), (1683, 12339), (2673, 7769), (4113, 5049), (4131, 5027)]