21818992

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{5521}}^1$

素因数の和:5561

約数の個数: 40

約数和(自身を含む): 47930960

約数和(自身を除く): 26111968

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 38, 52, 76, 104, 152, 208, 247, 304, 494, 988, 1976, 3952, 5521, 11042, 22084, 44168, 71773, 88336, 104899, 143546, 209798, 287092, 419596, 574184, 839192, 1148368, 1363687, 1678384, 2727374, 5454748, 10909496, 21818992]

約数ペア:

[(1, 21818992), (2, 10909496), (4, 5454748), (8, 2727374), (13, 1678384), (16, 1363687), (19, 1148368), (26, 839192), (38, 574184), (52, 419596), (76, 287092), (104, 209798), (152, 143546), (208, 104899), (247, 88336), (304, 71773), (494, 44168), (988, 22084), (1976, 11042), (3952, 5521)]