21108867

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{467}}^1$

素因数の和:563

約数の個数: 32

約数和(自身を含む): 32497920

約数和(自身を除く): 11389053

約数列:

[1, 3, 13, 19, 39, 57, 61, 183, 247, 467, 741, 793, 1159, 1401, 2379, 3477, 6071, 8873, 15067, 18213, 26619, 28487, 45201, 85461, 115349, 346047, 370331, 541253, 1110993, 1623759, 7036289, 21108867]

約数ペア:

[(1, 21108867), (3, 7036289), (13, 1623759), (19, 1110993), (39, 541253), (57, 370331), (61, 346047), (183, 115349), (247, 85461), (467, 45201), (741, 28487), (793, 26619), (1159, 18213), (1401, 15067), (2379, 8873), (3477, 6071)]