72131440

素因数分解:

$2^4\times 5^1\times {\mathrm{901643}}^1$

素因数の和:901656

約数の個数: 20

約数和(自身を含む): 167705784

約数和(自身を除く): 95574344

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 901643, 1803286, 3606572, 4508215, 7213144, 9016430, 14426288, 18032860, 36065720, 72131440]

約数ペア:

[(1, 72131440), (2, 36065720), (4, 18032860), (5, 14426288), (8, 9016430), (10, 7213144), (16, 4508215), (20, 3606572), (40, 1803286), (80, 901643)]