77881940

素因数分解:

$2^2\times 5^1\times {\mathrm{457}}^1\times {\mathrm{8521}}^1$

素因数の和:8987

約数の個数: 24

約数和(自身を含む): 163929192

約数和(自身を除く): 86047252

約数列:

[1, 2, 4, 5, 10, 20, 457, 914, 1828, 2285, 4570, 8521, 9140, 17042, 34084, 42605, 85210, 170420, 3894097, 7788194, 15576388, 19470485, 38940970, 77881940]

約数ペア:

[(1, 77881940), (2, 38940970), (4, 19470485), (5, 15576388), (10, 7788194), (20, 3894097), (457, 170420), (914, 85210), (1828, 42605), (2285, 34084), (4570, 17042), (8521, 9140)]