145212520

素因数分解:

$2^3\times 5^1\times {\mathrm{431}}^1\times {\mathrm{8423}}^1$

素因数の和:8865

約数の個数: 32

約数和(自身を含む): 327525120

約数和(自身を除く): 182312600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 431, 862, 1724, 2155, 3448, 4310, 8423, 8620, 16846, 17240, 33692, 42115, 67384, 84230, 168460, 336920, 3630313, 7260626, 14521252, 18151565, 29042504, 36303130, 72606260, 145212520]

約数ペア:

[(1, 145212520), (2, 72606260), (4, 36303130), (5, 29042504), (8, 18151565), (10, 14521252), (20, 7260626), (40, 3630313), (431, 336920), (862, 168460), (1724, 84230), (2155, 67384), (3448, 42115), (4310, 33692), (8423, 17240), (8620, 16846)]