21261456

素因数分解:

$2^4\times 3^2\times {\mathrm{19}}^2\times {\mathrm{409}}^1$

素因数の和:461

約数の個数: 90

約数和(自身を含む): 62952630

約数和(自身を除く): 41691174

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 19, 24, 36, 38, 48, 57, 72, 76, 114, 144, 152, 171, 228, 304, 342, 361, 409, 456, 684, 722, 818, 912, 1083, 1227, 1368, 1444, 1636, 2166, 2454, 2736, 2888, 3249, 3272, 3681, 4332, 4908, 5776, 6498, 6544, 7362, 7771, 8664, 9816, 12996, 14724, 15542, 17328, 19632, 23313, 25992, 29448, 31084, 46626, 51984, 58896, 62168, 69939, 93252, 124336, 139878, 147649, 186504, 279756, 295298, 373008, 442947, 559512, 590596, 885894, 1119024, 1181192, 1328841, 1771788, 2362384, 2657682, 3543576, 5315364, 7087152, 10630728, 21261456]

約数ペア:

[(1, 21261456), (2, 10630728), (3, 7087152), (4, 5315364), (6, 3543576), (8, 2657682), (9, 2362384), (12, 1771788), (16, 1328841), (18, 1181192), (19, 1119024), (24, 885894), (36, 590596), (38, 559512), (48, 442947), (57, 373008), (72, 295298), (76, 279756), (114, 186504), (144, 147649), (152, 139878), (171, 124336), (228, 93252), (304, 69939), (342, 62168), (361, 58896), (409, 51984), (456, 46626), (684, 31084), (722, 29448), (818, 25992), (912, 23313), (1083, 19632), (1227, 17328), (1368, 15542), (1444, 14724), (1636, 12996), (2166, 9816), (2454, 8664), (2736, 7771), (2888, 7362), (3249, 6544), (3272, 6498), (3681, 5776), (4332, 4908)]