128096240

素因数分解:

$2^4\times 5^1\times {\mathrm{1601203}}^1$

素因数の和:1601216

約数の個数: 20

約数和(自身を含む): 297823944

約数和(自身を除く): 169727704

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1601203, 3202406, 6404812, 8006015, 12809624, 16012030, 25619248, 32024060, 64048120, 128096240]

約数ペア:

[(1, 128096240), (2, 64048120), (4, 32024060), (5, 25619248), (8, 16012030), (10, 12809624), (16, 8006015), (20, 6404812), (40, 3202406), (80, 1601203)]