21636573

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{211}}^1\times {\mathrm{257}}^1$

素因数の和:497

約数の個数: 32

約数和(自身を含む): 35005440

約数和(自身を除く): 13368867

約数列:

[1, 3, 7, 19, 21, 57, 133, 211, 257, 399, 633, 771, 1477, 1799, 4009, 4431, 4883, 5397, 12027, 14649, 28063, 34181, 54227, 84189, 102543, 162681, 379589, 1030313, 1138767, 3090939, 7212191, 21636573]

約数ペア:

[(1, 21636573), (3, 7212191), (7, 3090939), (19, 1138767), (21, 1030313), (57, 379589), (133, 162681), (211, 102543), (257, 84189), (399, 54227), (633, 34181), (771, 28063), (1477, 14649), (1799, 12027), (4009, 5397), (4431, 4883)]