128445940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{917471}}^1$

素因数の和:917487

約数の個数: 24

約数和(自身を含む): 308270592

約数和(自身を除く): 179824652

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 917471, 1834942, 3669884, 4587355, 6422297, 9174710, 12844594, 18349420, 25689188, 32111485, 64222970, 128445940]

約数ペア:

[(1, 128445940), (2, 64222970), (4, 32111485), (5, 25689188), (7, 18349420), (10, 12844594), (14, 9174710), (20, 6422297), (28, 4587355), (35, 3669884), (70, 1834942), (140, 917471)]