19712007

素因数分解:

$3^2\times 7^1\times {\mathrm{139}}^1\times {\mathrm{2251}}^1$

素因数の和:2403

約数の個数: 24

約数和(自身を含む): 32789120

約数和(自身を除く): 13077113

約数列:

[1, 3, 7, 9, 21, 63, 139, 417, 973, 1251, 2251, 2919, 6753, 8757, 15757, 20259, 47271, 141813, 312889, 938667, 2190223, 2816001, 6570669, 19712007]

約数ペア:

[(1, 19712007), (3, 6570669), (7, 2816001), (9, 2190223), (21, 938667), (63, 312889), (139, 141813), (417, 47271), (973, 20259), (1251, 15757), (2251, 8757), (2919, 6753)]