20017935

素因数分解:

$3^4\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{307}}^1$

素因数の和:354

約数の個数: 80

約数和(自身を含む): 42932736

約数和(自身を除く): 22914801

約数列:

[1, 3, 5, 7, 9, 15, 21, 23, 27, 35, 45, 63, 69, 81, 105, 115, 135, 161, 189, 207, 307, 315, 345, 405, 483, 567, 621, 805, 921, 945, 1035, 1449, 1535, 1863, 2149, 2415, 2763, 2835, 3105, 4347, 4605, 6447, 7061, 7245, 8289, 9315, 10745, 13041, 13815, 19341, 21183, 21735, 24867, 32235, 35305, 41445, 49427, 58023, 63549, 65205, 96705, 105915, 124335, 148281, 174069, 190647, 247135, 290115, 317745, 444843, 571941, 741405, 870345, 953235, 1334529, 2224215, 2859705, 4003587, 6672645, 20017935]

約数ペア:

[(1, 20017935), (3, 6672645), (5, 4003587), (7, 2859705), (9, 2224215), (15, 1334529), (21, 953235), (23, 870345), (27, 741405), (35, 571941), (45, 444843), (63, 317745), (69, 290115), (81, 247135), (105, 190647), (115, 174069), (135, 148281), (161, 124335), (189, 105915), (207, 96705), (307, 65205), (315, 63549), (345, 58023), (405, 49427), (483, 41445), (567, 35305), (621, 32235), (805, 24867), (921, 21735), (945, 21183), (1035, 19341), (1449, 13815), (1535, 13041), (1863, 10745), (2149, 9315), (2415, 8289), (2763, 7245), (2835, 7061), (3105, 6447), (4347, 4605)]