21312566

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{761}}^1$

素因数の和:860

約数の個数: 32

約数和(自身を含む): 37307520

約数和(自身を除く): 15994954

約数列:

[1, 2, 11, 19, 22, 38, 67, 134, 209, 418, 737, 761, 1273, 1474, 1522, 2546, 8371, 14003, 14459, 16742, 28006, 28918, 50987, 101974, 159049, 318098, 560857, 968753, 1121714, 1937506, 10656283, 21312566]

約数ペア:

[(1, 21312566), (2, 10656283), (11, 1937506), (19, 1121714), (22, 968753), (38, 560857), (67, 318098), (134, 159049), (209, 101974), (418, 50987), (737, 28918), (761, 28006), (1273, 16742), (1474, 14459), (1522, 14003), (2546, 8371)]