21205008

素因数分解:

$2^4\times 3^2\times {\mathrm{11}}^2\times {\mathrm{1217}}^1$

素因数の和:1253

約数の個数: 90

約数和(自身を含む): 65283582

約数和(自身を除く): 44078574

約数列:

[1, 2, 3, 4, 6, 8, 9, 11, 12, 16, 18, 22, 24, 33, 36, 44, 48, 66, 72, 88, 99, 121, 132, 144, 176, 198, 242, 264, 363, 396, 484, 528, 726, 792, 968, 1089, 1217, 1452, 1584, 1936, 2178, 2434, 2904, 3651, 4356, 4868, 5808, 7302, 8712, 9736, 10953, 13387, 14604, 17424, 19472, 21906, 26774, 29208, 40161, 43812, 53548, 58416, 80322, 87624, 107096, 120483, 147257, 160644, 175248, 214192, 240966, 294514, 321288, 441771, 481932, 589028, 642576, 883542, 963864, 1178056, 1325313, 1767084, 1927728, 2356112, 2650626, 3534168, 5301252, 7068336, 10602504, 21205008]

約数ペア:

[(1, 21205008), (2, 10602504), (3, 7068336), (4, 5301252), (6, 3534168), (8, 2650626), (9, 2356112), (11, 1927728), (12, 1767084), (16, 1325313), (18, 1178056), (22, 963864), (24, 883542), (33, 642576), (36, 589028), (44, 481932), (48, 441771), (66, 321288), (72, 294514), (88, 240966), (99, 214192), (121, 175248), (132, 160644), (144, 147257), (176, 120483), (198, 107096), (242, 87624), (264, 80322), (363, 58416), (396, 53548), (484, 43812), (528, 40161), (726, 29208), (792, 26774), (968, 21906), (1089, 19472), (1217, 17424), (1452, 14604), (1584, 13387), (1936, 10953), (2178, 9736), (2434, 8712), (2904, 7302), (3651, 5808), (4356, 4868)]