20914335

素因数分解:

$3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{701}}^1$

素因数の和:745

約数の個数: 64

約数和(自身を含む): 42456960

約数和(自身を除く): 21542625

約数列:

[1, 3, 5, 9, 13, 15, 17, 27, 39, 45, 51, 65, 85, 117, 135, 153, 195, 221, 255, 351, 459, 585, 663, 701, 765, 1105, 1755, 1989, 2103, 2295, 3315, 3505, 5967, 6309, 9113, 9945, 10515, 11917, 18927, 27339, 29835, 31545, 35751, 45565, 59585, 82017, 94635, 107253, 136695, 154921, 178755, 246051, 321759, 410085, 464763, 536265, 774605, 1230255, 1394289, 1608795, 2323815, 4182867, 6971445, 20914335]

約数ペア:

[(1, 20914335), (3, 6971445), (5, 4182867), (9, 2323815), (13, 1608795), (15, 1394289), (17, 1230255), (27, 774605), (39, 536265), (45, 464763), (51, 410085), (65, 321759), (85, 246051), (117, 178755), (135, 154921), (153, 136695), (195, 107253), (221, 94635), (255, 82017), (351, 59585), (459, 45565), (585, 35751), (663, 31545), (701, 29835), (765, 27339), (1105, 18927), (1755, 11917), (1989, 10515), (2103, 9945), (2295, 9113), (3315, 6309), (3505, 5967)]