21016071

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{577}}^1$

素因数の和:676

約数の個数: 32

約数和(自身を含む): 33292800

約数和(自身を除く): 12276729

約数列:

[1, 3, 9, 19, 27, 57, 71, 171, 213, 513, 577, 639, 1349, 1731, 1917, 4047, 5193, 10963, 12141, 15579, 32889, 36423, 40967, 98667, 122901, 296001, 368703, 778373, 1106109, 2335119, 7005357, 21016071]

約数ペア:

[(1, 21016071), (3, 7005357), (9, 2335119), (19, 1106109), (27, 778373), (57, 368703), (71, 296001), (171, 122901), (213, 98667), (513, 40967), (577, 36423), (639, 32889), (1349, 15579), (1731, 12141), (1917, 10963), (4047, 5193)]