19971513

素因数分解:

$3^2\times {\mathrm{53}}^1\times {\mathrm{149}}^1\times {\mathrm{281}}^1$

素因数の和:489

約数の個数: 24

約数和(自身を含む): 29694600

約数和(自身を除く): 9723087

約数列:

[1, 3, 9, 53, 149, 159, 281, 447, 477, 843, 1341, 2529, 7897, 14893, 23691, 41869, 44679, 71073, 125607, 134037, 376821, 2219057, 6657171, 19971513]

約数ペア:

[(1, 19971513), (3, 6657171), (9, 2219057), (53, 376821), (149, 134037), (159, 125607), (281, 71073), (447, 44679), (477, 41869), (843, 23691), (1341, 14893), (2529, 7897)]