78442940

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{35983}}^1$

素因数の和:36101

約数の個数: 24

約数和(自身を含む): 166246080

約数和(自身を除く): 87803140

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 35983, 71966, 143932, 179915, 359830, 719660, 3922147, 7844294, 15688588, 19610735, 39221470, 78442940]

約数ペア:

[(1, 78442940), (2, 39221470), (4, 19610735), (5, 15688588), (10, 7844294), (20, 3922147), (109, 719660), (218, 359830), (436, 179915), (545, 143932), (1090, 71966), (2180, 35983)]