64880249

素因数分解:

$7^1\times {\mathrm{43}}^1\times {\mathrm{439}}^1\times {\mathrm{491}}^1$

素因数の和:980

約数の個数: 16

約数和(自身を含む): 76200960

約数和(自身を除く): 11320711

約数列:

[1, 7, 43, 301, 439, 491, 3073, 3437, 18877, 21113, 132139, 147791, 215549, 1508843, 9268607, 64880249]

約数ペア:

[(1, 64880249), (7, 9268607), (43, 1508843), (301, 215549), (439, 147791), (491, 132139), (3073, 21113), (3437, 18877)]