405536240

素因数分解:

$2^4\times 5^1\times {\mathrm{5069203}}^1$

素因数の和:5069216

約数の個数: 20

約数和(自身を含む): 942871944

約数和(自身を除く): 537335704

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 5069203, 10138406, 20276812, 25346015, 40553624, 50692030, 81107248, 101384060, 202768120, 405536240]

約数ペア:

[(1, 405536240), (2, 202768120), (4, 101384060), (5, 81107248), (8, 50692030), (10, 40553624), (16, 25346015), (20, 20276812), (40, 10138406), (80, 5069203)]