20293767

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{179}}^1$

素因数の和:237

約数の個数: 64

約数和(自身を含む): 36288000

約数和(自身を除く): 15994233

約数列:

[1, 3, 9, 13, 17, 19, 27, 39, 51, 57, 117, 153, 171, 179, 221, 247, 323, 351, 459, 513, 537, 663, 741, 969, 1611, 1989, 2223, 2327, 2907, 3043, 3401, 4199, 4833, 5967, 6669, 6981, 8721, 9129, 10203, 12597, 20943, 27387, 30609, 37791, 39559, 44213, 57817, 62829, 82161, 91827, 113373, 118677, 132639, 173451, 356031, 397917, 520353, 751621, 1068093, 1193751, 1561059, 2254863, 6764589, 20293767]

約数ペア:

[(1, 20293767), (3, 6764589), (9, 2254863), (13, 1561059), (17, 1193751), (19, 1068093), (27, 751621), (39, 520353), (51, 397917), (57, 356031), (117, 173451), (153, 132639), (171, 118677), (179, 113373), (221, 91827), (247, 82161), (323, 62829), (351, 57817), (459, 44213), (513, 39559), (537, 37791), (663, 30609), (741, 27387), (969, 20943), (1611, 12597), (1989, 10203), (2223, 9129), (2327, 8721), (2907, 6981), (3043, 6669), (3401, 5967), (4199, 4833)]