18834921

素因数分解:

$3^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{6361}}^1$

素因数の和:6421

約数の個数: 24

約数和(自身を含む): 31759104

約数和(自身を除く): 12924183

約数列:

[1, 3, 7, 9, 21, 47, 63, 141, 329, 423, 987, 2961, 6361, 19083, 44527, 57249, 133581, 298967, 400743, 896901, 2092769, 2690703, 6278307, 18834921]

約数ペア:

[(1, 18834921), (3, 6278307), (7, 2690703), (9, 2092769), (21, 896901), (47, 400743), (63, 298967), (141, 133581), (329, 57249), (423, 44527), (987, 19083), (2961, 6361)]