78699880

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{40153}}^1$

素因数の和:40178

約数の個数: 48

約数和(自身を含む): 205990020

約数和(自身を除く): 127290140

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 40153, 80306, 160612, 200765, 281071, 321224, 401530, 562142, 803060, 1124284, 1405355, 1606120, 1967497, 2248568, 2810710, 3934994, 5621420, 7869988, 9837485, 11242840, 15739976, 19674970, 39349940, 78699880]

約数ペア:

[(1, 78699880), (2, 39349940), (4, 19674970), (5, 15739976), (7, 11242840), (8, 9837485), (10, 7869988), (14, 5621420), (20, 3934994), (28, 2810710), (35, 2248568), (40, 1967497), (49, 1606120), (56, 1405355), (70, 1124284), (98, 803060), (140, 562142), (196, 401530), (245, 321224), (280, 281071), (392, 200765), (490, 160612), (980, 80306), (1960, 40153)]