208030420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{800117}}^1$

素因数の和:800139

約数の個数: 24

約数和(自身を含む): 470469384

約数和(自身を除く): 262438964

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 800117, 1600234, 3200468, 4000585, 8001170, 10401521, 16002340, 20803042, 41606084, 52007605, 104015210, 208030420]

約数ペア:

[(1, 208030420), (2, 104015210), (4, 52007605), (5, 41606084), (10, 20803042), (13, 16002340), (20, 10401521), (26, 8001170), (52, 4000585), (65, 3200468), (130, 1600234), (260, 800117)]