7801990

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{227}}^1\times {\mathrm{491}}^1$

素因数の和:732

約数の個数: 32

約数和(自身を含む): 16153344

約数和(自身を除く): 8351354

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 227, 454, 491, 982, 1135, 1589, 2270, 2455, 3178, 3437, 4910, 6874, 7945, 15890, 17185, 34370, 111457, 222914, 557285, 780199, 1114570, 1560398, 3900995, 7801990]

約数ペア:

[(1, 7801990), (2, 3900995), (5, 1560398), (7, 1114570), (10, 780199), (14, 557285), (35, 222914), (70, 111457), (227, 34370), (454, 17185), (491, 15890), (982, 7945), (1135, 6874), (1589, 4910), (2270, 3437), (2455, 3178)]