21784644

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{137}}^1\times {\mathrm{631}}^1$

素因数の和:785

約数の個数: 72

約数和(自身を含む): 63493248

約数和(自身を除く): 41708604

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 137, 252, 274, 411, 548, 631, 822, 959, 1233, 1262, 1644, 1893, 1918, 2466, 2524, 2877, 3786, 3836, 4417, 4932, 5679, 5754, 7572, 8631, 8834, 11358, 11508, 13251, 17262, 17668, 22716, 26502, 34524, 39753, 53004, 79506, 86447, 159012, 172894, 259341, 345788, 518682, 605129, 778023, 1037364, 1210258, 1556046, 1815387, 2420516, 3112092, 3630774, 5446161, 7261548, 10892322, 21784644]

約数ペア:

[(1, 21784644), (2, 10892322), (3, 7261548), (4, 5446161), (6, 3630774), (7, 3112092), (9, 2420516), (12, 1815387), (14, 1556046), (18, 1210258), (21, 1037364), (28, 778023), (36, 605129), (42, 518682), (63, 345788), (84, 259341), (126, 172894), (137, 159012), (252, 86447), (274, 79506), (411, 53004), (548, 39753), (631, 34524), (822, 26502), (959, 22716), (1233, 17668), (1262, 17262), (1644, 13251), (1893, 11508), (1918, 11358), (2466, 8834), (2524, 8631), (2877, 7572), (3786, 5754), (3836, 5679), (4417, 4932)]