81849455

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{131}}^1\times {\mathrm{139}}^1$

素因数の和:335

約数の個数: 32

約数和(自身を含む): 106444800

約数和(自身を除く): 24595345

約数列:

[1, 5, 29, 31, 131, 139, 145, 155, 655, 695, 899, 3799, 4031, 4061, 4309, 4495, 18209, 18995, 20155, 20305, 21545, 91045, 117769, 124961, 528061, 564479, 588845, 624805, 2640305, 2822395, 16369891, 81849455]

約数ペア:

[(1, 81849455), (5, 16369891), (29, 2822395), (31, 2640305), (131, 624805), (139, 588845), (145, 564479), (155, 528061), (655, 124961), (695, 117769), (899, 91045), (3799, 21545), (4031, 20305), (4061, 20155), (4309, 18995), (4495, 18209)]