219492021

素因数分解:

$3^1\times 7^2\times {\mathrm{47}}^1\times {\mathrm{31769}}^1$

素因数の和:31833

約数の個数: 24

約数和(自身を含む): 347690880

約数和(自身を除く): 128198859

約数列:

[1, 3, 7, 21, 47, 49, 141, 147, 329, 987, 2303, 6909, 31769, 95307, 222383, 667149, 1493143, 1556681, 4479429, 4670043, 10452001, 31356003, 73164007, 219492021]

約数ペア:

[(1, 219492021), (3, 73164007), (7, 31356003), (21, 10452001), (47, 4670043), (49, 4479429), (141, 1556681), (147, 1493143), (329, 667149), (987, 222383), (2303, 95307), (6909, 31769)]