280745680

素因数分解:

$2^4\times 5^1\times {\mathrm{3509321}}^1$

素因数の和:3509334

約数の個数: 20

約数和(自身を含む): 652733892

約数和(自身を除く): 371988212

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 3509321, 7018642, 14037284, 17546605, 28074568, 35093210, 56149136, 70186420, 140372840, 280745680]

約数ペア:

[(1, 280745680), (2, 140372840), (4, 70186420), (5, 56149136), (8, 35093210), (10, 28074568), (16, 17546605), (20, 14037284), (40, 7018642), (80, 3509321)]