21810867

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{73}}^1\times {\mathrm{163}}^1$

素因数の和:299

約数の個数: 32

約数和(自身を含む): 32621568

約数和(自身を除く): 10810701

約数列:

[1, 3, 13, 39, 47, 73, 141, 163, 219, 489, 611, 949, 1833, 2119, 2847, 3431, 6357, 7661, 10293, 11899, 22983, 35697, 44603, 99593, 133809, 154687, 298779, 464061, 559253, 1677759, 7270289, 21810867]

約数ペア:

[(1, 21810867), (3, 7270289), (13, 1677759), (39, 559253), (47, 464061), (73, 298779), (141, 154687), (163, 133809), (219, 99593), (489, 44603), (611, 35697), (949, 22983), (1833, 11899), (2119, 10293), (2847, 7661), (3431, 6357)]