128439700

素因数分解:

$2^2\times 5^2\times {\mathrm{167}}^1\times {\mathrm{7691}}^1$

素因数の和:7872

約数の個数: 36

約数和(自身を含む): 280419552

約数和(自身を除く): 151979852

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 167, 334, 668, 835, 1670, 3340, 4175, 7691, 8350, 15382, 16700, 30764, 38455, 76910, 153820, 192275, 384550, 769100, 1284397, 2568794, 5137588, 6421985, 12843970, 25687940, 32109925, 64219850, 128439700]

約数ペア:

[(1, 128439700), (2, 64219850), (4, 32109925), (5, 25687940), (10, 12843970), (20, 6421985), (25, 5137588), (50, 2568794), (100, 1284397), (167, 769100), (334, 384550), (668, 192275), (835, 153820), (1670, 76910), (3340, 38455), (4175, 30764), (7691, 16700), (8350, 15382)]