21273939

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{2647}}^1$

素因数の和:2719

約数の個数: 24

約数和(自身を含む): 33047040

約数和(自身を除く): 11773101

約数列:

[1, 3, 9, 19, 47, 57, 141, 171, 423, 893, 2647, 2679, 7941, 8037, 23823, 50293, 124409, 150879, 373227, 452637, 1119681, 2363771, 7091313, 21273939]

約数ペア:

[(1, 21273939), (3, 7091313), (9, 2363771), (19, 1119681), (47, 452637), (57, 373227), (141, 150879), (171, 124409), (423, 50293), (893, 23823), (2647, 8037), (2679, 7941)]