28438640

素因数分解:

$2^4\times 5^1\times {\mathrm{355483}}^1$

素因数の和:355496

約数の個数: 20

約数和(自身を含む): 66120024

約数和(自身を除く): 37681384

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 355483, 710966, 1421932, 1777415, 2843864, 3554830, 5687728, 7109660, 14219320, 28438640]

約数ペア:

[(1, 28438640), (2, 14219320), (4, 7109660), (5, 5687728), (8, 3554830), (10, 2843864), (16, 1777415), (20, 1421932), (40, 710966), (80, 355483)]