21006969

素因数分解:

$3^1\times {\mathrm{79}}^1\times {\mathrm{151}}^1\times {\mathrm{587}}^1$

素因数の和:820

約数の個数: 16

約数和(自身を含む): 28600320

約数和(自身を除く): 7593351

約数列:

[1, 3, 79, 151, 237, 453, 587, 1761, 11929, 35787, 46373, 88637, 139119, 265911, 7002323, 21006969]

約数ペア:

[(1, 21006969), (3, 7002323), (79, 265911), (151, 139119), (237, 88637), (453, 46373), (587, 35787), (1761, 11929)]