20219507

素因数分解:

$7^3\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{233}}^1$

素因数の和:288

約数の個数: 32

約数和(自身を含む): 26956800

約数和(自身を除く): 6737293

約数列:

[1, 7, 11, 23, 49, 77, 161, 233, 253, 343, 539, 1127, 1631, 1771, 2563, 3773, 5359, 7889, 11417, 12397, 17941, 37513, 58949, 79919, 86779, 125587, 262591, 412643, 879109, 1838137, 2888501, 20219507]

約数ペア:

[(1, 20219507), (7, 2888501), (11, 1838137), (23, 879109), (49, 412643), (77, 262591), (161, 125587), (233, 86779), (253, 79919), (343, 58949), (539, 37513), (1127, 17941), (1631, 12397), (1771, 11417), (2563, 7889), (3773, 5359)]