18211115

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{503}}^1\times {\mathrm{557}}^1$

素因数の和:1078

約数の個数: 16

約数和(自身を含む): 23623488

約数和(自身を除く): 5412373

約数列:

[1, 5, 13, 65, 503, 557, 2515, 2785, 6539, 7241, 32695, 36205, 280171, 1400855, 3642223, 18211115]

約数ペア:

[(1, 18211115), (5, 3642223), (13, 1400855), (65, 280171), (503, 36205), (557, 32695), (2515, 7241), (2785, 6539)]