981351

素因数分解:

$3^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{421}}^1$

素因数の和:471

約数の個数: 24

約数和(自身を含む): 1667744

約数和(自身を除く): 686393

約数列:

[1, 3, 7, 9, 21, 37, 63, 111, 259, 333, 421, 777, 1263, 2331, 2947, 3789, 8841, 15577, 26523, 46731, 109039, 140193, 327117, 981351]

約数ペア:

[(1, 981351), (3, 327117), (7, 140193), (9, 109039), (21, 46731), (37, 26523), (63, 15577), (111, 8841), (259, 3789), (333, 2947), (421, 2331), (777, 1263)]