189378820

素因数分解:

$2^2\times 5^1\times {\mathrm{239}}^1\times {\mathrm{39619}}^1$

素因数の和:39867

約数の個数: 24

約数和(自身を含む): 399369600

約数和(自身を除く): 209990780

約数列:

[1, 2, 4, 5, 10, 20, 239, 478, 956, 1195, 2390, 4780, 39619, 79238, 158476, 198095, 396190, 792380, 9468941, 18937882, 37875764, 47344705, 94689410, 189378820]

約数ペア:

[(1, 189378820), (2, 94689410), (4, 47344705), (5, 37875764), (10, 18937882), (20, 9468941), (239, 792380), (478, 396190), (956, 198095), (1195, 158476), (2390, 79238), (4780, 39619)]