19660615

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{53}}^1\times {\mathrm{439}}^1$

素因数の和:523

約数の個数: 24

約数和(自身を含む): 26088480

約数和(自身を除く): 6427865

約数列:

[1, 5, 13, 53, 65, 169, 265, 439, 689, 845, 2195, 3445, 5707, 8957, 23267, 28535, 44785, 74191, 116335, 302471, 370955, 1512355, 3932123, 19660615]

約数ペア:

[(1, 19660615), (5, 3932123), (13, 1512355), (53, 370955), (65, 302471), (169, 116335), (265, 74191), (439, 44785), (689, 28535), (845, 23267), (2195, 8957), (3445, 5707)]