128533880

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{74729}}^1$

素因数の和:74783

約数の個数: 32

約数和(自身を含む): 295930800

約数和(自身を除く): 167396920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 74729, 149458, 298916, 373645, 597832, 747290, 1494580, 2989160, 3213347, 6426694, 12853388, 16066735, 25706776, 32133470, 64266940, 128533880]

約数ペア:

[(1, 128533880), (2, 64266940), (4, 32133470), (5, 25706776), (8, 16066735), (10, 12853388), (20, 6426694), (40, 3213347), (43, 2989160), (86, 1494580), (172, 747290), (215, 597832), (344, 373645), (430, 298916), (860, 149458), (1720, 74729)]