208138520

素因数分解:

$2^3\times 5^1\times {\mathrm{431}}^1\times {\mathrm{12073}}^1$

素因数の和:12515

約数の個数: 32

約数和(自身を含む): 469437120

約数和(自身を除く): 261298600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 431, 862, 1724, 2155, 3448, 4310, 8620, 12073, 17240, 24146, 48292, 60365, 96584, 120730, 241460, 482920, 5203463, 10406926, 20813852, 26017315, 41627704, 52034630, 104069260, 208138520]

約数ペア:

[(1, 208138520), (2, 104069260), (4, 52034630), (5, 41627704), (8, 26017315), (10, 20813852), (20, 10406926), (40, 5203463), (431, 482920), (862, 241460), (1724, 120730), (2155, 96584), (3448, 60365), (4310, 48292), (8620, 24146), (12073, 17240)]