87021940

素因数分解:

$2^2\times 5^1\times {\mathrm{457}}^1\times {\mathrm{9521}}^1$

素因数の和:9987

約数の個数: 24

約数和(自身を含む): 183165192

約数和(自身を除く): 96143252

約数列:

[1, 2, 4, 5, 10, 20, 457, 914, 1828, 2285, 4570, 9140, 9521, 19042, 38084, 47605, 95210, 190420, 4351097, 8702194, 17404388, 21755485, 43510970, 87021940]

約数ペア:

[(1, 87021940), (2, 43510970), (4, 21755485), (5, 17404388), (10, 8702194), (20, 4351097), (457, 190420), (914, 95210), (1828, 47605), (2285, 38084), (4570, 19042), (9140, 9521)]