78850520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{281609}}^1$

素因数の和:281627

約数の個数: 32

約数和(自身を含む): 202759200

約数和(自身を除く): 123908680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 281609, 563218, 1126436, 1408045, 1971263, 2252872, 2816090, 3942526, 5632180, 7885052, 9856315, 11264360, 15770104, 19712630, 39425260, 78850520]

約数ペア:

[(1, 78850520), (2, 39425260), (4, 19712630), (5, 15770104), (7, 11264360), (8, 9856315), (10, 7885052), (14, 5632180), (20, 3942526), (28, 2816090), (35, 2252872), (40, 1971263), (56, 1408045), (70, 1126436), (140, 563218), (280, 281609)]