21061719

素因数分解:

$3^2\times 7^2\times {\mathrm{163}}^1\times {\mathrm{293}}^1$

素因数の和:476

約数の個数: 36

約数和(自身を含む): 35728056

約数和(自身を除く): 14666337

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 163, 293, 441, 489, 879, 1141, 1467, 2051, 2637, 3423, 6153, 7987, 10269, 14357, 18459, 23961, 43071, 47759, 71883, 129213, 143277, 334313, 429831, 1002939, 2340191, 3008817, 7020573, 21061719]

約数ペア:

[(1, 21061719), (3, 7020573), (7, 3008817), (9, 2340191), (21, 1002939), (49, 429831), (63, 334313), (147, 143277), (163, 129213), (293, 71883), (441, 47759), (489, 43071), (879, 23961), (1141, 18459), (1467, 14357), (2051, 10269), (2637, 7987), (3423, 6153)]