398789709

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{149}}^1\times {\mathrm{491}}^1$

素因数の和:745

約数の個数: 32

約数和(自身を含む): 566784000

約数和(自身を除く): 167994291

約数列:

[1, 3, 23, 69, 79, 149, 237, 447, 491, 1473, 1817, 3427, 5451, 10281, 11293, 11771, 33879, 35313, 38789, 73159, 116367, 219477, 270733, 812199, 892147, 1682657, 2676441, 5047971, 5779561, 17338683, 132929903, 398789709]

約数ペア:

[(1, 398789709), (3, 132929903), (23, 17338683), (69, 5779561), (79, 5047971), (149, 2676441), (237, 1682657), (447, 892147), (491, 812199), (1473, 270733), (1817, 219477), (3427, 116367), (5451, 73159), (10281, 38789), (11293, 35313), (11771, 33879)]