80784140

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{4493}}^1$

素因数の和:4562

約数の個数: 48

約数和(自身を含む): 181198080

約数和(自身を除く): 100413940

約数列:

[1, 2, 4, 5, 10, 20, 29, 31, 58, 62, 116, 124, 145, 155, 290, 310, 580, 620, 899, 1798, 3596, 4493, 4495, 8986, 8990, 17972, 17980, 22465, 44930, 89860, 130297, 139283, 260594, 278566, 521188, 557132, 651485, 696415, 1302970, 1392830, 2605940, 2785660, 4039207, 8078414, 16156828, 20196035, 40392070, 80784140]

約数ペア:

[(1, 80784140), (2, 40392070), (4, 20196035), (5, 16156828), (10, 8078414), (20, 4039207), (29, 2785660), (31, 2605940), (58, 1392830), (62, 1302970), (116, 696415), (124, 651485), (145, 557132), (155, 521188), (290, 278566), (310, 260594), (580, 139283), (620, 130297), (899, 89860), (1798, 44930), (3596, 22465), (4493, 17980), (4495, 17972), (8986, 8990)]