20519037

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{1021}}^1$

素因数の和:1074

約数の個数: 48

約数和(自身を含む): 38263680

約数和(自身を除く): 17744643

約数列:

[1, 3, 7, 9, 11, 21, 29, 33, 63, 77, 87, 99, 203, 231, 261, 319, 609, 693, 957, 1021, 1827, 2233, 2871, 3063, 6699, 7147, 9189, 11231, 20097, 21441, 29609, 33693, 64323, 78617, 88827, 101079, 207263, 235851, 266481, 325699, 621789, 707553, 977097, 1865367, 2279893, 2931291, 6839679, 20519037]

約数ペア:

[(1, 20519037), (3, 6839679), (7, 2931291), (9, 2279893), (11, 1865367), (21, 977097), (29, 707553), (33, 621789), (63, 325699), (77, 266481), (87, 235851), (99, 207263), (203, 101079), (231, 88827), (261, 78617), (319, 64323), (609, 33693), (693, 29609), (957, 21441), (1021, 20097), (1827, 11231), (2233, 9189), (2871, 7147), (3063, 6699)]