156928820

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{127}}^1\times {\mathrm{1993}}^1$

素因数の和:2160

約数の個数: 48

約数和(自身を含む): 343031808

約数和(自身を除く): 186102988

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 127, 155, 254, 310, 508, 620, 635, 1270, 1993, 2540, 3937, 3986, 7874, 7972, 9965, 15748, 19685, 19930, 39370, 39860, 61783, 78740, 123566, 247132, 253111, 308915, 506222, 617830, 1012444, 1235660, 1265555, 2531110, 5062220, 7846441, 15692882, 31385764, 39232205, 78464410, 156928820]

約数ペア:

[(1, 156928820), (2, 78464410), (4, 39232205), (5, 31385764), (10, 15692882), (20, 7846441), (31, 5062220), (62, 2531110), (124, 1265555), (127, 1235660), (155, 1012444), (254, 617830), (310, 506222), (508, 308915), (620, 253111), (635, 247132), (1270, 123566), (1993, 78740), (2540, 61783), (3937, 39860), (3986, 39370), (7874, 19930), (7972, 19685), (9965, 15748)]