20178369

素因数分解:

$3^3\times {\mathrm{47}}^1\times {\mathrm{15901}}^1$

素因数の和:15957

約数の個数: 16

約数和(自身を含む): 30531840

約数和(自身を除く): 10353471

約数列:

[1, 3, 9, 27, 47, 141, 423, 1269, 15901, 47703, 143109, 429327, 747347, 2242041, 6726123, 20178369]

約数ペア:

[(1, 20178369), (3, 6726123), (9, 2242041), (27, 747347), (47, 429327), (141, 143109), (423, 47703), (1269, 15901)]