21172767

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{151}}^1\times {\mathrm{607}}^1$

素因数の和:779

約数の個数: 32

約数和(自身を含む): 35487744

約数和(自身を除く): 14314977

約数列:

[1, 3, 7, 11, 21, 33, 77, 151, 231, 453, 607, 1057, 1661, 1821, 3171, 4249, 4983, 6677, 11627, 12747, 20031, 34881, 46739, 91657, 140217, 274971, 641599, 1008227, 1924797, 3024681, 7057589, 21172767]

約数ペア:

[(1, 21172767), (3, 7057589), (7, 3024681), (11, 1924797), (21, 1008227), (33, 641599), (77, 274971), (151, 140217), (231, 91657), (453, 46739), (607, 34881), (1057, 20031), (1661, 12747), (1821, 11627), (3171, 6677), (4249, 4983)]