19131385

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{2213}}^1$

素因数の和:2257

約数の個数: 32

約数和(自身を含む): 29756160

約数和(自身を除く): 10624775

約数列:

[1, 5, 7, 13, 19, 35, 65, 91, 95, 133, 247, 455, 665, 1235, 1729, 2213, 8645, 11065, 15491, 28769, 42047, 77455, 143845, 201383, 210235, 294329, 546611, 1006915, 1471645, 2733055, 3826277, 19131385]

約数ペア:

[(1, 19131385), (5, 3826277), (7, 2733055), (13, 1471645), (19, 1006915), (35, 546611), (65, 294329), (91, 210235), (95, 201383), (133, 143845), (247, 77455), (455, 42047), (665, 28769), (1235, 15491), (1729, 11065), (2213, 8645)]