21039753

素因数分解:

$3^1\times 7^1\times {\mathrm{83}}^1\times {\mathrm{12071}}^1$

素因数の和:12164

約数の個数: 16

約数和(自身を含む): 32449536

約数和(自身を除く): 11409783

約数列:

[1, 3, 7, 21, 83, 249, 581, 1743, 12071, 36213, 84497, 253491, 1001893, 3005679, 7013251, 21039753]

約数ペア:

[(1, 21039753), (3, 7013251), (7, 3005679), (21, 1001893), (83, 253491), (249, 84497), (581, 36213), (1743, 12071)]