78958280

素因数分解:

$2^3\times 5^1\times {\mathrm{1973957}}^1$

素因数の和:1973968

約数の個数: 16

約数和(自身を含む): 177656220

約数和(自身を除く): 98697940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1973957, 3947914, 7895828, 9869785, 15791656, 19739570, 39479140, 78958280]

約数ペア:

[(1, 78958280), (2, 39479140), (4, 19739570), (5, 15791656), (8, 9869785), (10, 7895828), (20, 3947914), (40, 1973957)]