21284902

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{7673}}^1$

素因数の和:7767

約数の個数: 16

約数和(自身を含む): 34072560

約数和(自身を除く): 12787658

約数列:

[1, 2, 19, 38, 73, 146, 1387, 2774, 7673, 15346, 145787, 291574, 560129, 1120258, 10642451, 21284902]

約数ペア:

[(1, 21284902), (2, 10642451), (19, 1120258), (38, 560129), (73, 291574), (146, 145787), (1387, 15346), (2774, 7673)]