280904080

素因数分解:

$2^4\times 5^1\times {\mathrm{3511301}}^1$

素因数の和:3511314

約数の個数: 20

約数和(自身を含む): 653102172

約数和(自身を除く): 372198092

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 3511301, 7022602, 14045204, 17556505, 28090408, 35113010, 56180816, 70226020, 140452040, 280904080]

約数ペア:

[(1, 280904080), (2, 140452040), (4, 70226020), (5, 56180816), (8, 35113010), (10, 28090408), (16, 17556505), (20, 14045204), (40, 7022602), (80, 3511301)]