21356049

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{743}}^1$

素因数の和:837

約数の個数: 32

約数和(自身を含む): 33997824

約数和(自身を除く): 12641775

約数列:

[1, 3, 11, 13, 33, 39, 67, 143, 201, 429, 737, 743, 871, 2211, 2229, 2613, 8173, 9581, 9659, 24519, 28743, 28977, 49781, 106249, 149343, 318747, 547591, 647153, 1642773, 1941459, 7118683, 21356049]

約数ペア:

[(1, 21356049), (3, 7118683), (11, 1941459), (13, 1642773), (33, 647153), (39, 547591), (67, 318747), (143, 149343), (201, 106249), (429, 49781), (737, 28977), (743, 28743), (871, 24519), (2211, 9659), (2229, 9581), (2613, 8173)]