21562940

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{22003}}^1$

素因数の和:22026

約数の個数: 36

約数和(自身を含む): 52677576

約数和(自身を除く): 31114636

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 22003, 44006, 88012, 110015, 154021, 220030, 308042, 440060, 616084, 770105, 1078147, 1540210, 2156294, 3080420, 4312588, 5390735, 10781470, 21562940]

約数ペア:

[(1, 21562940), (2, 10781470), (4, 5390735), (5, 4312588), (7, 3080420), (10, 2156294), (14, 1540210), (20, 1078147), (28, 770105), (35, 616084), (49, 440060), (70, 308042), (98, 220030), (140, 154021), (196, 110015), (245, 88012), (490, 44006), (980, 22003)]