21145993

素因数分解:

${\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{83}}^1$

素因数の和:189

約数の個数: 32

約数和(自身を含む): 26127360

約数和(自身を除く): 4981367

約数列:

[1, 11, 19, 23, 53, 83, 209, 253, 437, 583, 913, 1007, 1219, 1577, 1909, 4399, 4807, 11077, 13409, 17347, 20999, 23161, 36271, 48389, 83581, 101177, 254771, 398981, 919391, 1112947, 1922363, 21145993]

約数ペア:

[(1, 21145993), (11, 1922363), (19, 1112947), (23, 919391), (53, 398981), (83, 254771), (209, 101177), (253, 83581), (437, 48389), (583, 36271), (913, 23161), (1007, 20999), (1219, 17347), (1577, 13409), (1909, 11077), (4399, 4807)]