21120654

素因数分解:

$2^1\times 3^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{1153}}^1$

素因数の和:1272

約数の個数: 32

約数和(自身を含む): 43870464

約数和(自身を除く): 22749810

約数列:

[1, 2, 3, 6, 43, 71, 86, 129, 142, 213, 258, 426, 1153, 2306, 3053, 3459, 6106, 6918, 9159, 18318, 49579, 81863, 99158, 148737, 163726, 245589, 297474, 491178, 3520109, 7040218, 10560327, 21120654]

約数ペア:

[(1, 21120654), (2, 10560327), (3, 7040218), (6, 3520109), (43, 491178), (71, 297474), (86, 245589), (129, 163726), (142, 148737), (213, 99158), (258, 81863), (426, 49579), (1153, 18318), (2306, 9159), (3053, 6918), (3459, 6106)]