19380921

素因数分解:

$3^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{4253}}^1$

素因数の和:4301

約数の個数: 24

約数和(自身を含む): 31037184

約数和(自身を除く): 11656263

約数列:

[1, 3, 7, 21, 31, 49, 93, 147, 217, 651, 1519, 4253, 4557, 12759, 29771, 89313, 131843, 208397, 395529, 625191, 922901, 2768703, 6460307, 19380921]

約数ペア:

[(1, 19380921), (3, 6460307), (7, 2768703), (21, 922901), (31, 625191), (49, 395529), (93, 208397), (147, 131843), (217, 89313), (651, 29771), (1519, 12759), (4253, 4557)]