21816753

素因数分解:

$3^1\times 7^1\times {\mathrm{283}}^1\times {\mathrm{3671}}^1$

素因数の和:3964

約数の個数: 16

約数和(自身を含む): 33371136

約数和(自身を除く): 11554383

約数列:

[1, 3, 7, 21, 283, 849, 1981, 3671, 5943, 11013, 25697, 77091, 1038893, 3116679, 7272251, 21816753]

約数ペア:

[(1, 21816753), (3, 7272251), (7, 3116679), (21, 1038893), (283, 77091), (849, 25697), (1981, 11013), (3671, 5943)]